Signal transmission method and system, and control information transmission method and device

ABSTRACT

Provided are a signal transmission method and system, and a control information transmission method and apparatus, the signal transmission method includes: a first communication node acquires M sending beams; the first communication node determines N sending beams for sending a first signal from the M sending beams; and the first communication node sends the first signal to a second communication node by using the N sending beams; where M is a natural number, and N is a natural number less than or equal to M.

CROSS-REFERENCES TO RELATED APPLICATIONS

This application is a continuation of U.S. Pat. No. 11,234,230, filed onNov. 5, 2019 which is the U.S. National Stage, filed under 35 U.S.C.371, of International Patent Application No. PCT/CN2018/090617, filed onJun. 11, 2018, which claims priority to a Chinese patent application No.201710313919.X filed on May 5, 2017, where the entire contents of all ofsaid applications are incorporated herein by reference.

TECHNICAL FIELD

The present disclosure relates to, but is not limited to, communicationtechnologies, and in particular relates to a signal transmission methodand system and a control information sending method and apparatus.

BACKGROUND

High-frequency transmission, as one of core technologies in New Radio(NR), provides possibility for future large-capacity high-speed datatransmission, but one core characteristic of high-frequencycommunication is large spatial fading, and the transmission distance isshort. On the other hand, high-frequency wavelength is short, andlarge-capacity Multiple Input Multiple Output (MIMO) may be adopted, sothat high-gain beams can be formed, and the transmission distance can beincreased. However, since omnidirectional coverage by the beam cannot beachieved, and the NR has many different characteristics from Long TermEvolution (LTE), high-frequency communication based on beam transmissionin the NR is a hot spot problem currently being studied.

A method for sending a high-frequency signal based on beam transmissionin the NR technology is currently under study.

SUMMARY

Embodiments of the present disclosure provide a signal transmissionmethod and system and a control information sending method andapparatus, so as to implement the sending of a high-frequency signal inthe NR technology.

The embodiments of the present disclosure provide a signal transmissionmethod. The method includes steps described below.

A first communication node acquires M transmission mode sets.

The first communication node determines N transmission mode sets forsending a first signal from the M transmission mode sets.

The first communication node sends the first signal to a secondcommunication node by using the N transmission mode sets.

One transmission mode set includes at least one transmission mode, M isa natural number, and N is a natural number less than or equal to M.

The embodiments of the present disclosure further provide a controlinformation sending method. The method includes steps described below.

A third communication node sends at least one piece of second-typecontrol information to a first communication node so that the firstcommunication node acquires M transmission mode sets and/or determines Ntransmission mode sets for sending a first signal from the Mtransmission mode sets.

One transmission mode set includes at least one transmission mode, M isa natural number, and N is a natural number less than or equal to M.

The embodiments of the present disclosure further provide a signaltransmission method. The method includes steps described below.

A third communication node sends at least one piece of second-typecontrol information to a first communication node.

The first communication node acquires, according to the at least onepiece of second-type control information, M transmission mode setsand/or determines N transmission mode sets for sending a first signalfrom the M transmission mode sets.

The first communication node sends the first signal to a secondcommunication node by using the N transmission mode sets.

The second communication node receives the first signal according to theN transmission mode sets.

One transmission mode set includes at least one transmission mode, M isa natural number, N is a natural number less than or equal to M, and thethird communication node and the second communication node are a samecommunication node or different communication nodes.

The embodiments of the present disclosure further provide a signaltransmission apparatus. The apparatus includes: an acquisition module, afirst determination module and a first sending module.

The acquisition module is configured to acquire M transmission modesets.

The first determination module is configured to determine N transmissionmode sets for sending a first signal from the M transmission mode setsacquired by the acquisition module.

The first sending module is configured to send the first signal to asecond communication node by using the N transmission mode setsdetermined by the first determination module.

One transmission mode set includes at least one transmission mode, M isa natural number, and N is a natural number less than or equal to M.

The embodiments of the present disclosure further provide a controlinformation sending apparatus. The apparatus includes a second sendingmodule.

The second sending module is configured to send at least one piece ofsecond-type control information to a first communication node so thatthe first communication node acquires M transmission mode sets and/ordetermines N transmission mode sets for sending a first signal from theM transmission mode sets.

One transmission mode set includes at least one transmission mode, M isa natural number, and N is a natural number less than or equal to M.

The embodiments of the present disclosure further provide a signaltransmission system. The system includes: a first communication node, asecond communication node and a third communication node, where thethird communication node and the second communication node are a samecommunication node or different communication nodes.

The third communication node is configured to send at least one piece ofsecond-type control information to the first communication node.

The first communication node is configured to acquire, according to theat least one piece of second-type control information, M transmissionmode sets and/or determine N transmission mode sets for sending a firstsignal from the M transmission mode sets.

The first communication node is configured to send the first signal tothe second communication node by using the N transmission mode sets.

The second communication node is configured to receive the first signalaccording to the N transmission mode sets.

One transmission mode set includes at least one transmission mode, M isa natural number, and N is a natural number less than or equal to M.

The embodiments of the present disclosure further provide acomputer-readable storage medium, which is configured to store computerprograms, where when the computer programs are executed by a processor,the steps in the signal transmission method described in the embodimentsof the present disclosure are implemented; or when the computer programsare executed by the processor, the steps in the control informationsending method described in the embodiments of the present disclosureare implemented.

The embodiments of the present disclosure further provide a signaltransmission apparatus. The apparatus includes: a processor and a memoryconfigured to store computer programs capable of being run on theprocessor.

The processor is configured to execute the steps in the signaltransmission method described in the embodiments of the presentdisclosure when the computer programs are run.

The embodiments of the present disclosure further provide a controlinformation sending apparatus. The apparatus includes: a processor and amemory configured to store computer programs capable of being run on theprocessor.

The processor is configured to execute the steps in the controlinformation sending method described in the embodiments of the presentdisclosure when the computer programs are run.

The embodiments of the present disclosure include steps as follows: afirst communication node acquires M transmission mode sets; the firstcommunication node determines N transmission mode sets for sending afirst signal from the M transmission mode sets; and the firstcommunication node sends the first signal to a second communication nodeby using the N transmission mode sets; where one transmission mode setincludes at least one transmission mode, M is a natural number, and N isa natural number less than or equal to M. In the embodiments of thepresent disclosure, sending of a high-frequency signal based on beamtransmission in the NR technology is implemented. Further, how to selecta transmission mode set from a plurality of transmission mode sets forsending the first signal and how to determine a candidate transmissionmode set corresponding to a signal are researched for a downlinkreference signal, so that the transmission mode of the first signal isacquired according to a transmission mode of a second signal. The firstsignal may be an uplink signal and the second signal may be a downlinksignal. According to the embodiments of the present disclosure,different transmission modes are configured for different signal types,or different acquisition modes of transmission modes are configured fordifferent types of signals, or different types of signals share atransmission mode resource pool firstly and then information abouttransmission modes of different signal types are respectively notifiedthrough control information. The problem that different signal typesrequire different transmission modes is solved, and the signalingoverhead can also be further controlled through the method of sharingthe transmission mode resource pool.

Other features and advantages of the embodiments of the presentdisclosure will be elaborated hereinafter in the description and,moreover, partially become apparent from the description, or will beunderstood through implementation of the present disclosure. The objectand other advantages of the present disclosure may be implemented andobtained through structures set forth in the description, claims anddrawings.

BRIEF DESCRIPTION OF DRAWINGS

The drawings are used to provide a further understanding of thetechnical solutions of the present disclosure, constitute a part of thedescription, explain the technical solutions of the present disclosurein conjunction with the embodiments of the present application, and donot limit the technical solutions of the present disclosure.

FIG. 1 is a flowchart of a signal transmission method according to anembodiment of the present disclosure;

FIG. 2 is a schematic diagram of a signal transmission apparatusaccording to an embodiment of the present disclosure;

FIG. 3 is an exemplary diagram of acquiring M transmission mode setsthrough transmission modes of a downlink control channel according to anapplication example of the present disclosure;

FIG. 4 is an exemplary diagram of acquiring M transmission mode setsthrough receiving modes of a downlink control channel according to anapplication example of the present disclosure;

FIG. 5 is an exemplary diagram of notifying existence of two pieces ofDownlink Control Information (DCI) in one time unit according to anapplication example of the present disclosure;

FIG. 6 is an exemplary diagram of selecting a transmission mode of anuplink control channel according to time information and associatedsignal types corresponding to M transmission mode sets according to anapplication example of the present disclosure;

FIG. 7 is an exemplary diagram of selecting a transmission mode of anuplink control channel according to time density informationcorresponding to M transmission mode sets according to an applicationexample of the present disclosure;

FIG. 8 is an exemplary diagram of obtaining a transmission mode of anuplink control channel according to a detected transmission mode (orreceiving mode) of a downlink control channel according to anapplication example of the present disclosure;

FIG. 9 is an exemplary diagram of acquiring a transmission mode of anuplink control channel according to a transmission mode of a downlinkcontrol channel related to the uplink control channel according to anapplication example of the present disclosure;

FIG. 10 is an exemplary diagram illustrating that two search spaces inone time unit corresponds to two different transmission modes of adownlink control channel according to an application example of thepresent disclosure;

FIG. 11 illustrates that a transmission mode of each uplink controlchannel is the same, and that ratio occupation of the transmission modeof an uplink control channel is the same as ratio configuration of atransmission mode (or receiving mode) of a downlink control channelaccording to an application example of the present disclosure;

FIG. 12 illustrates that a transmission mode of each uplink controlchannel is the same, and that resources are occupied in equal proportionby transmission modes of uplink control channels according to anapplication example of the present disclosure;

FIG. 13 is an exemplary diagram of a frequency division transmissionmode of a downlink control channel corresponding to a time divisiontransmission mode of an uplink control channel according to anapplication example of the present disclosure;

FIG. 14 is an exemplary diagram illustrating that M transmission modesets are obtained according to configured transmission mode sets of adownlink control channel and are irrelevant to a downlink controlchannel associated with an uplink control channel according to anapplication example of the present disclosure;

FIG. 15 is an exemplary diagram of correspondence between channel stateinformation-reference signal (CSI-RS) ports of a base station andsounding reference signal (SRS) ports of a terminal according to anapplication example of the present disclosure; and

FIG. 16 is an exemplary diagram illustrating selection of an SRS portfrom an SRS port group by a terminal according to an application exampleof the present disclosure.

DETAILED DESCRIPTION

Objects, technical solutions and advantages of the present disclosurewill be clearer from a detailed description of embodiments of thepresent disclosure in conjunction with the drawings. It is to be notedthat if not in collision, the embodiments and features therein in thepresent application may be combined with each other.

The steps shown in the flowcharts among the drawings may be executed bya computer system such as a group of computers capable of executinginstructions. Although logical sequences are shown in the flowcharts,the shown or described steps may be executed in sequences different fromthose described herein in some cases.

As shown in FIG. 1 , a signal transmission method in the embodiments ofthe present disclosure includes steps described below.

In step 101, a first communication node acquires M transmission modesets.

In step 102, the first communication node determines N transmission modesets for sending a first signal from the M transmission mode sets.

In step 103, the first communication node sends the first signal to asecond communication node by using the N transmission mode sets.

One transmission mode set includes at least one transmission mode, M isa natural number, and N is a natural number less than or equal to M.

The first signal includes at least one of: a control channel signal, adata channel signal, a demodulation reference signal, or a measurementreference signal.

The different transmission modes may be distinguished through at leastone of: sending beam information, reference signal resource information,reference signal resource set information, reference signal portinformation, reference signal port set information, information about atime domain resource where a reference signal is located, informationabout a frequency domain resource where a reference signal is located,precoding matrix information, sending beam index information,transmission diversity, repeated sending or a transmission mode. Thetransmission mode includes closed-loop transmission and open-looptransmission. Alternatively, the transmission mode may also be embodiedby establishing a Quasi-Co-Location relationship (QCL) between referencesignals, such as establishing a QCL relationship between a demodulationreference signal and an uplink reference signal of a Physical UplinkControl Channel (PUCCH), or establishing a QCL relationship between thedemodulation reference signal and a downlink reference signal of thePUCCH. Two reference signals satisfy a QCL relationship, which refers tothat a channel characteristic parameter of one reference signal may bederived from a channel characteristic parameter of the other referencesignal. The channel characteristic parameter may include at least oneof: delay spread, Doppler spread, Doppler shift, average delay, anaverage gain, an average vertical sending angle, an average horizontalsending angle, an average vertical angle of arrival, an averagehorizontal angle of arrival, a central vertical sending angle, a centralhorizontal sending angle, a central vertical angle of arrival, a centralhorizontal angle of arrival, a receiving beam set, or a sending beamset. The transmission mode may also be referred to as a sending mode.The transmission mode may also be embodied by establishing anassociation relationship between reference signals, for example, whenreciprocity exists between the uplink and the downlink, a piece ofdownlink reference signal information is configured in the PUCCHconfiguration information, and the terminal (i.e., the firstcommunication node) may obtain, based on the downlink reference signalinformation, the transmission mode information for sending the PUCCH,for example, by using a receiving beam or a receiving mode for receivingthe downlink reference signal, and the sending beam or the transmissionmode for sending the PUCCH is obtained according to reciprocityderivation.

In the embodiments of the present disclosure, the first communicationnode may be a terminal, the second communication node may be a basestation, and the first signal may be an uplink signal. In an embodiment,the first communication node acquires the M transmission mode sets in atleast one of the following manners.

The M transmission mode sets are obtained by acquiring many transmissionmodes associated with first-type control information included in thefirst signal.

Second-type control information is received, and the M transmission modesets are obtained according to the second-type control information.

The M transmission mode sets are obtained according to configurationinformation about a to-be-detected search space of a control channel ina time unit associated with the first signal.

The M transmission mode sets are obtained according to configurationinformation about a to-be-detected transmission mode of the controlchannel in the time unit associated with the first signal.

The M transmission mode sets are obtained according to configurationinformation about a to-be-detected receiving mode of the control channelin the time unit associated with the first signal.

The M transmission mode sets are obtained according to configurationinformation about a detected search space where the control channel islocated in the time unit associated with the first signal.

The M transmission mode sets are obtained according to configurationinformation about a detected transmission mode of the control channel inthe time unit associated with the first signal.

The M transmission mode sets are obtained according to configurationinformation about a detected receiving mode of the control channel inthe time unit associated with the first signal.

The M transmission mode sets are obtained by acquiring a transmissionmode of a second signal associated with the first signal.

The M transmission mode sets are obtained by acquiring a receiving modeof the second signal associated with the first signal.

Information about the M transmission mode sets is acquired in animplicit manner.

In an embodiment, the first communication node receives the second-typecontrol information and obtains the M transmission mode sets accordingto the second-type control information in at least one of the followingincluded manners.

The second-type control information includes information about atransmission mode set of a control channel signal sent by a thirdcommunication node, and the first communication node obtains the Mtransmission mode sets according to the transmission mode set of thecontrol channel signal sent by the third communication node; where thethird communication node and the second communication node are a samecommunication node or different communication nodes.

The second-type control information includes information about areceiving mode set of the control channel signal received by the firstcommunication node, and the first communication node obtains the Mtransmission mode sets according to the information about the receivingmode set of the control channel signal received by the firstcommunication node.

The second-type control information includes a plurality of pieces ofcontrol information, and the M transmission mode sets are obtainedaccording to the plurality of pieces of control information.

The second-type control information includes first control informationand second control information, where the first control informationindicates information about a transmission mode resource pool shared bydifferent signal types, the second control information indicates theinformation about the M transmission mode sets, and the M transmissionmode sets belong to the transmission mode resource pool.

The second-type control information includes information about a firstreference signal, and the first communication node acquires theinformation about the M transmission mode sets according to the firstreference signal.

The second-type control information includes information about a secondreference signal, and the first communication node acquires theinformation about the M transmission mode sets according to the secondreference signal.

The second-type control information includes information about asynchronization signal, and the first communication node acquires theinformation about the M transmission mode sets according to theinformation about the synchronization signal.

The second-type control information is configured for triggering sendingof information about the first signal and retransmission joint coding ofthe second signal associated with the first signal by using amulti-transmission mode set.

The second-type control information indicates information about a groupof first reference signals or information about a group of secondreference signals, and the first communication node acquires the Mtransmission mode sets according to the group of first reference signalsor the group of second reference signals.

A transmission direction of the first reference signal is the same as atransmission direction of the first signal, and a transmission directionof the second reference signal is different from the transmissiondirection of the first signal.

In an embodiment, the first communication node determines the Ntransmission mode sets for sending the first signal from the Mtransmission mode sets by using at least one combination of thefollowing manners.

Second-type control information is received, and the N transmission modesets among the M transmission mode sets are determined according to anindication of the second-type control information.

The N transmission mode sets are determined according to timeinformation corresponding to the M transmission mode sets.

The N transmission mode sets are determined according to a type of asecond signal corresponding to the M transmission mode sets.

The N transmission mode sets are determined according to a type offirst-type control information corresponding to the M transmission modesets.

The N transmission mode sets are determined according to a priorityorder corresponding to the M transmission mode sets.

The N transmission mode sets are determined according to time domaindensity information corresponding to the M transmission mode sets.

The N transmission mode sets are determined according to receivingquality of the second signal corresponding to the M transmission modesets.

The N transmission mode sets are determined according to whether apredetermined condition is satisfied.

The N transmission mode sets are determined according to informationabout a resource occupied by the first signal, where the informationabout the resource includes at least one of the following resources: atime domain resource, a frequency domain resource, a demodulationreference signal port resource or a sending antenna port resource.

In an embodiment, the step of determining the N transmission mode setsaccording to the time information corresponding to the M transmissionmode sets includes: selecting N transmission mode sets corresponding tothe latest time from the M transmission mode sets; where timecorresponding to the one transmission mode set is time at which a secondsignal corresponding to the at least one transmission mode of the onetransmission mode set is located, or the time corresponding to the onetransmission mode set is time at which the first communication nodeacquires the at least one transmission mode of the one transmission modeset.

The step of determining the N transmission mode sets according to thetype of the second signal corresponding to the M transmission mode setsincludes: selecting transmission mode sets corresponding to a secondsignal having a high priority as the N transmission mode sets accordingto a priority of the type of the second signal, where the type of thesecond signal includes: a control channel signal, a data channel signaland a measurement reference signal, where the control channel signal,the data channel signal and the measurement reference signal are indescending order of priority.

The step of determining the N transmission mode sets according to thetype of the first-type control information corresponding to the Mtransmission mode sets includes: selecting transmission mode setsassociated with N pieces of first-type control information having thehighest priorities as the N transmission mode sets; where the priorityof the first-type control information is determined according to atleast one of: acknowledgement (ACK)/non-acknowledgement (NACK) feedbackinformation or channel state information feedback, a delay requirementof control information, a period characteristic of control information,or an information size characteristic of control information.

The step of determining the N transmission mode sets according to thepriority order corresponding to the M transmission mode sets includes:selecting N transmission mode sets having the highest priorities fromthe M transmission mode sets.

The step of determining the N transmission mode sets according to thetime domain density information corresponding to the M transmission modesets includes: selecting N transmission mode sets corresponding to thehighest time domain densities from the M transmission mode sets.

The step of determining the N transmission mode sets according to thereceiving quality of the second signal corresponding to the Mtransmission mode sets includes: receiving second signals, selecting Nsecond signals having the best receiving quality, and obtaining the Ntransmission mode sets according to receiving modes of the selectedsecond signals.

Correspondingly, it is indicated that the transmission mode sets areused by the third communication node for sending the second signals.

A sounding reference signal (SRS) set may be configured with the samereceiving beams so that the first communication node may select any onefrom the SRS set for sending. For example, an appropriate SRS isselected for sending based on the receiving quality of a downlinkmeasurement reference signal.

In an embodiment, the N transmission mode sets includes a firsttransmission mode set and/or a second transmission mode set, where thestep of determining the N transmission mode sets according to whetherthe predetermined condition is satisfied includes the following cases.

In response to determining that the predetermined condition issatisfied, it is determined to use the first transmission mode set oruse the first transmission mode set and the second transmission modeset.

In response to determining that the predetermined condition is notsatisfied, it is determined to use the second transmission mode set.

In an embodiment, whether the predetermined condition is satisfied isdetermined through at least one of the following manners.

The second-type control information is received, where the second-typecontrol information indicates a receiving situation of a signalpreviously sent by a first communication node, and whether thepredetermined condition is satisfied is determined according to thereceiving situation.

The second-type control information is received, where the second-typecontrol information indicates whether the predetermined condition issatisfied.

Whether the predetermined condition is satisfied is determined accordingto configuration information about a to-be-detected search space of acontrol channel in a time unit associated with the first signal.

Whether the predetermined condition is satisfied is determined accordingto configuration information about a to-be-detected transmission mode ofthe control channel in the time unit associated with the first signal.

Whether the predetermined condition is satisfied is determined accordingto configuration information about a to-be-detected receiving mode ofthe control channel in the time unit associated with the first signal.

Whether the predetermined condition is satisfied is determined accordingto configuration information about a detected search space where thecontrol channel is located in the time unit associated with the firstsignal.

Whether the predetermined condition is satisfied is determined accordingto configuration information about a detected transmission mode of thecontrol channel in the time unit associated with the first signal.

Whether the predetermined condition is satisfied is determined accordingto configuration information about a detected receiving mode of thecontrol channel in the time unit associated with the first signal.

Whether the predetermined condition is satisfied is determined accordingto configuration information about a transmission mode of a secondsignal associated with the first signal in the time unit associated withthe first signal.

Whether the predetermined condition is satisfied is determined accordingto configuration information about a receiving mode of the second signalassociated with the first signal in the time unit associated with thefirst signal.

Whether the predetermined condition is satisfied is determined accordingto a signal type of the first signal.

When the first signal is the control channel, whether the predeterminedcondition is satisfied is determined according to a type of the controlchannel.

In an embodiment, the predetermined condition includes at least one ofthe following conditions. The first signal is a retransmission signal.

A second signal associated with the first signal is the retransmissionsignal.

The second-type control information is detected in a first search space.

The second-type control information is detected in both the first searchspace and a second search space.

Configuration information about a to-be-detected search space of acontrol channel in a time unit associated with the first signal includesthe first search space.

Configuration information about a to-be-detected transmission mode ofthe control channel in the time unit associated with the first signalincludes a third transmission mode.

Configuration information about a to-be-detected receiving mode of thecontrol channel in the time unit associated with the first signalincludes a first receiving mode.

Configuration information about a detected search space where thecontrol channel is located in the time unit associated with the firstsignal includes the first search space.

Configuration information about a detected transmission mode of thecontrol channel in the time unit associated with the first signalincludes the third transmission mode.

Configuration information about a detected receiving mode of the controlchannel in the time unit associated with the first signal includes thefirst receiving mode.

Configuration information about a transmission mode of the second signalassociated with the first signal in the time unit associated with thefirst signal includes the third transmission mode.

Configuration information about a receiving mode of the second signalassociated with the first signal in the time unit associated with thefirst signal includes the first receiving mode.

The first search space is associated with the first transmission modeset, and/or the first receiving mode is associated with the firsttransmission mode set, and/or the third transmission mode is associatedwith the first transmission mode set; and/or the second search space isassociated with the second transmission mode set.

In an embodiment, the time unit associated with the first signalincludes at least one of the following:

-   -   a time unit where the first signal is located;    -   a time unit where the second signal associated with the first        signal is located; or    -   a time unit belonging to an agreed time unit window.

In an embodiment, the second signal is a signal received by the firstcommunication node.

The second signal includes at least one of the following signals: thecontrol channel signal, the data channel signal, a demodulationreference signal, or the measurement reference signal.

The first signal includes response information about the second signal,or the second signal includes configuration information about the firstsignal, or the configuration information about the first signal includesrelevant information about the second signal.

The response information includes ACK/NACK information or channel statefeedback information.

In an embodiment, the first communication node sends the first signal tothe second communication node by using the N transmission mode sets inat least one included combination of the following manners:

The first signal is sent in a time division manner by using the Ntransmission mode sets.

The first signal is sent in a frequency division manner by using the Ntransmission mode sets.

One transmission mode corresponds to one demodulation reference signalport group, and the first signal is sent on each port of the onedemodulation reference signal port group by using the one transmissionmode.

A plurality of transmission modes correspond to one demodulationreference signal port, and the first signal is sent on the onedemodulation reference signal port by using the plurality oftransmission modes.

One transmission mode corresponds to one antenna port group, and thefirst signal is sent on each port of the one antenna port group by usingthe one transmission mode.

The number of time granularities occupied by the N transmission modesets is determined according to a value of N and the number ofdemodulation reference signal ports or of sending antenna portsallocated to the first signal.

The transmission mode sets of the first signal at different time domaingranularities may be different, or the joint channel estimation cannotbe performed on the same demodulation reference signal port over unitswith different time domain granularities.

In an embodiment, demodulation reference signal pattern informationabout the first signal is determined according to a value of N and thenumber of demodulation reference signal ports or sending antenna portsallocated to the first signal.

Alternatively, the demodulation reference signal pattern informationabout the first signal is determined according to the value of N.

In an embodiment, the N transmission mode sets satisfy one of thefollowing characteristics.

The N transmission mode sets include a first transmission mode set and asecond transmission mode set, where information about the first signalsent in the first transmission mode set is a subset of information sentin the second transmission mode set.

Information about the first signal sent in different transmission modesets among the N transmission mode sets is the same.

The information about the first signal sent in the differenttransmission mode sets among the N transmission mode sets is different.

In an embodiment, before the first communication node acquires the Mtransmission mode sets, the method further includes: determining anacquisition mode for the M transmission mode sets.

In an embodiment, the acquisition mode for the M transmission mode setsis determined in one of the following manners.

The acquisition mode is determined according to a type of the firstsignal.

Second-type control information is received, where the second-typecontrol information indicates the acquisition mode.

The acquisition mode is determined according to indication informationabout whether uplink and downlink reciprocity is established.

When the first signal is a first control channel signal, the acquisitionmode is determined according to a type of the first control channelsignal.

In an embodiment, the method further includes that the firstcommunication node receives a plurality of pieces of configurationinformation, where different configuration information includesconfiguration information about different types of first signals; and/orthat the first communication node receives a plurality of pieces ofconfiguration information, where different configuration informationincludes configuration information about different types of firstcontrol channels; where the first signal is a first control channelsignal.

The plurality of pieces of configuration information includes at leastone of: configuration information about a transmission mode of the firstsignal or a first control channel, configuration information about anacquisition mode for the transmission mode of the first signal or thefirst control channel, or configuration information about adetermination manner of the N transmission modes corresponding to thefirst signal or the first control channel from the M transmission modesets.

In an embodiment, the type of the first control channel signal includesat least one of the following types.

The first control channel is periodically sent.

The first control channel is periodically sent.

The first control channel is semi-periodically sent.

A time domain of the first control channel is less than a predeterminedthreshold.

The time domain of the first control channel is greater than thepredetermined threshold, where the first control channel includes datachannel response information.

The first control channel includes channel state feedback information.

The first control channel is a control channel over a first network.

The first control channel is a control channel over a second network.

Duration of the first control channel is less than a predeterminedthreshold.

The duration of the first control channel is greater than thepredetermined threshold.

The first control channel is a long-format control channel.

The first control channel is a short-format control channel.

The first network may be LTE and the second network may be NR, and ofcourse other networks are not excluded.

In an embodiment, the first signal satisfies at least one of thefollowing characteristics.

A transmission mode of the first signal and a transmission mode of asecond signal share configuration information.

The transmission mode of the first signal and a receiving mode of thesecond signal share configuration information.

A transmission direction of the first signal is different from atransmission direction of the second signal.

Sharing of the configuration information indicates that merely one isnotified in the configuration information, and information about theother may be derived from the one in the configuration information; orone set is notified in the configuration information and may beconfigured for the first signal and may be configured for the secondsignal.

In an embodiment, the first signal satisfies at least one of thefollowing characteristics.

The transmission mode of the first signal and the transmission mode ofthe second signal share the configuration information, where resourcegranularities corresponding to different transmission modes of the firstsignal in the configuration information are different from resourcegranularities corresponding to different transmission modes of thesecond signal in the configuration information.

The transmission mode of the first signal and the receiving mode of thesecond signal share the configuration information, where resourcegranularities corresponding to different transmission modes of the firstsignal in the configuration information are different from resourcegranularities corresponding to different receiving modes of the secondsignal in the configuration information. The transmission mode of thefirst signal and the transmission mode of the second signal share theconfiguration information, where resource proportions occupied by thedifferent transmission modes of the first signal in the configurationinformation are different from resource proportions occupied by thedifferent transmission modes of the second signal in the configurationinformation.

The transmission mode of the first signal and the receiving mode of thesecond signal share the configuration information, where resourceproportions occupied by the different transmission modes of the firstsignal in the configuration information are different from resourceproportions occupied by the different receiving modes of the secondsignal in the configuration information. The transmission mode of thefirst signal and the transmission mode of the second signal share theconfiguration information, where multiplexing manners of the differenttransmission modes of the first signal in the configuration informationare different from multiplexing manners of the different transmissionmodes of the second signal in the configuration information.

The transmission mode of the first signal and the receiving mode of thesecond signal share the configuration information, where multiplexingmanners of the different transmission modes of the first signal in theconfiguration information are different from multiplexing manners of thedifferent receiving modes of the second signal in the configurationinformation.

A resource includes at least one of the following resources: a timedomain resource, a frequency domain resource or a reference signal portresource.

The multiplexing manner includes time division multiplexing, frequencydivision multiplexing, code division multiplexing and space divisionmultiplexing.

The embodiments of the present disclosure further provide a controlinformation sending method.

The method includes steps described below.

A third communication node sends at least one piece of second-typecontrol information to a first communication node so that the firstcommunication node acquires M transmission mode sets and/or determines Ntransmission mode sets for sending a first signal from the Mtransmission mode sets.

One transmission mode set includes at least one transmission mode, M isa natural number, and N is a natural number less than or equal to M.

In an embodiment, the method further includes a step described below.

The third communication node receives, according to the at least onepiece of second-type control information, the first signal sent by thefirst communication node.

In an embodiment, when the third communication node sends the at leastone piece of second-type control information to the first communicationnode so that the first communication node acquires the M transmissionmode sets, the at least one piece of second-type control information hasat least one of the following characteristics.

The second-type control information includes information about atransmission mode set of a control channel signal sent by the thirdcommunication node.

The second-type control information includes information about areceiving mode set of the control channel signal received by the firstcommunication node.

The second-type control information includes a plurality of pieces ofcontrol information, and the M transmission mode sets are obtainedaccording to the plurality of pieces of control information.

The second-type control information includes first control informationand second control information, where the first control informationindicates information about a transmission mode resource pool shared bydifferent signal types, the second control information indicatesinformation about the M transmission mode sets, and the M transmissionmode sets belong to the transmission mode resource pool.

The second-type control information includes information about a firstreference signal.

The second-type control information includes information about a secondreference signal.

The second-type control information includes information about asynchronization signal.

The second-type control information includes configuration informationabout a search space of a control channel.

The second-type control information triggers sending of informationabout the first signal and retransmission joint coding of a secondsignal associated with the first signal by using a multi-transmissionmode set.

The second-type control information indicates a group of informationabout the first reference signal or a group of information about thesecond reference signal.

A transmission direction of the first reference signal is different froma transmission direction of the second reference signal.

The transmission direction of the first reference signal is the same asa transmission direction of the first signal, and the transmissiondirection of the second reference signal is different from thetransmission direction of the first signal.

In an embodiment, the step in which the third communication node sendsthe at least one piece of second-type control information to the firstcommunication node so that the first communication node determines the Ntransmission mode sets for sending the first signal from the Mtransmission mode sets includes a step described below.

The third communication node directly indicates, through the at leastone piece of second-type control information, the N transmission modesets for sending the first signal.

Alternatively, the third communication node sends second-type controlinformation carrying an indication indicating a receiving situation of asignal previously sent by the first communication node to the firstcommunication node so that the first communication node determineswhether a predetermined condition is satisfied according to thereceiving situation and thereby determines the N transmission mode sets.

Alternatively, the third communication node sends second-type controlinformation carrying an indication indicating whether the predeterminedcondition is satisfied to the first communication node so that the firstcommunication node determines the N transmission mode sets.

In an embodiment, the at least one piece of second-type controlinformation satisfies at least one of the following characteristics.

The at least one piece of second-type control information furthercarries an indication indicating an acquisition mode so that the firstcommunication node determines an acquisition mode for the M transmissionmode sets.

The second-type control information includes a plurality of pieces ofconfiguration information, where different configuration informationincludes configuration information about different types of signals.

The second-type control information includes a plurality of pieces ofconfiguration information, where different configuration informationincludes configuration information about different types of firstcontrol channels.

The plurality of pieces of configuration information includes at leastone of: configuration information about a transmission mode of the firstsignal or a first control channel, configuration information about anacquisition mode for the transmission mode of the first signal or thefirst control channel, or configuration information about adetermination manner of the N transmission modes corresponding to thefirst signal or the first control channel from the M transmission modesets.

In an embodiment, the first signal satisfies one of the followingcharacteristics.

In the at least one piece of second-type control information, atransmission mode of the first signal and a transmission mode of asecond signal share configuration information.

The transmission mode of the first signal and a receiving mode of thesecond signal share configuration information.

A transmission direction of the first signal is different from atransmission direction of the second signal.

Sharing of the configuration information indicates that merely one isnotified in the configuration information, and information about theother may be derived from the one in the configuration information; orone set is notified in the configuration information and may beconfigured for the first signal and may be configured for the secondsignal.

In an embodiment, the first signal satisfies at least one of thefollowing characteristics.

The transmission mode of the first signal and the transmission mode ofthe second signal share the configuration information, where resourcegranularities corresponding to different transmission modes of the firstsignal in the configuration information are different from resourcegranularities corresponding to different transmission modes of thesecond signal in the configuration information. The transmission mode ofthe first signal and the receiving mode of the second signal share theconfiguration information, where resource granularities corresponding todifferent transmission modes of the first signal in the configurationinformation are different from resource granularities corresponding todifferent receiving modes of the second signal in the configurationinformation.

The transmission mode of the first signal and the transmission mode ofthe second signal share the configuration information, where resourceproportions occupied by the different transmission modes of the firstsignal in the configuration information are different from resourceproportions occupied by the different transmission modes of the secondsignal in the configuration information.

The transmission mode of the first signal and the receiving mode of thesecond signal share the configuration information, where resourceproportions occupied by the different transmission modes of the firstsignal in the configuration information are different from resourceproportions occupied by the different receiving modes of the secondsignal in the configuration information. The transmission mode of thefirst signal and the transmission mode of the second signal share theconfiguration information, where multiplexing manners of the differenttransmission modes of the first signal in the configuration informationare different from multiplexing manners of the different transmissionmodes of the second signal in the configuration information.

The transmission mode of the first signal and the receiving mode of thesecond signal share the configuration information, where multiplexingmanners of the different transmission modes of the first signal in theconfiguration information are different from multiplexing manners of thedifferent receiving modes of the second signal in the configurationinformation.

A resource includes a time domain resource, and/or a frequency domainresource, and/or a reference signal port resource.

The multiplexing manner includes time division multiplexing, frequencydivision multiplexing, code division multiplexing and space divisionmultiplexing.

The embodiments of the present disclosure further provide a signaltransmission method. The method includes steps described below.

A third communication node sends at least one piece of second-typecontrol information to a first communication node.

The first communication node acquires, according to the at least onepiece of second-type control information, M transmission mode setsand/or determines N transmission mode sets for sending a first signalfrom the M transmission mode sets.

The first communication node sends the first signal to a secondcommunication node by using the N transmission mode sets.

The second communication node receives the first signal according to theN transmission mode sets.

One transmission mode set includes at least one transmission mode, M isa natural number, N is a natural number less than or equal to M, and thethird communication node and the second communication node are a samecommunication node or different communication nodes.

In an embodiment, the method further includes that the thirdcommunication node receives, according to the at least one piece ofsecond-type control information, the first signal sent by the firstcommunication node.

In an embodiment, when the first communication node acquires the Mtransmission mode sets according to the at least one piece ofsecond-type control information, the at least one piece of second-typecontrol information has at least one of the following characteristics.

The second-type control information includes information about atransmission mode set of a control channel signal sent by the thirdcommunication node.

The second-type control information includes information about areceiving mode set of the control channel signal received by the firstcommunication node.

The second-type control information includes a plurality of pieces ofcontrol information, and the M transmission mode sets are obtainedaccording to the plurality of pieces of control information.

The second-type control information includes first control informationand second control information, where the first control informationindicates information about a transmission mode resource pool shared bydifferent signal types, the second control information indicatesinformation about the M transmission mode sets, and the M transmissionmode sets belong to the transmission mode resource pool.

The second-type control information includes information about a firstreference signal.

The second-type control information includes information about a secondreference signal.

The second-type control information includes information about asynchronization signal.

The second-type control information includes configuration informationabout a search space of a control channel.

The second-type control information triggers sending of informationabout the first signal and retransmission joint coding of a secondsignal associated with the first signal by using a multi-transmissionmode set.

The second-type control information indicates a group of informationabout the first reference signal or a group of information about thesecond reference signal.

A transmission direction of the first reference signal is different froma transmission direction of the second reference signal, where thetransmission direction of the first reference signal is the same as atransmission direction of the first signal, and the transmissiondirection of the second reference signal is different from thetransmission direction of the first signal.

In an embodiment, the step in which the third communication node sendsthe at least one piece of second-type control information to the firstcommunication node and the first communication node determines,according to the at least one piece of second-type control information,the N transmission mode sets for sending the first signal from the Mtransmission mode sets includes a step described below.

The third communication node directly indicates, through the at leastone piece of second-type control information, the N transmission modesets for sending the first signal.

Alternatively, the third communication node sends second-type controlinformation carrying an indication indicating a receiving situation of asignal previously sent by the first communication node to the firstcommunication node, and the first communication node determines whethera predetermined condition is satisfied according to the receivingsituation and thereby determines the N transmission mode sets.

Alternatively, the third communication node sends second-type controlinformation carrying an indication indicating whether the predeterminedcondition is satisfied to the first communication node, and the firstcommunication node determines the N transmission mode sets.

In an embodiment, the at least one piece of second-type controlinformation satisfies at least one of the following characteristics.

The at least one piece of second-type control information furthercarries an indication indicating an acquisition mode, and the firstcommunication node determines an acquisition mode for the M transmissionmode sets according to the at least one piece of second-type controlinformation.

The second-type control information includes a plurality of pieces ofconfiguration information, where different configuration informationincludes configuration information about different types of signals.

The second-type control information includes a plurality of pieces ofconfiguration information, where different configuration informationincludes configuration information about different types of firstcontrol channels.

The plurality of pieces of configuration information includes at leastone of: configuration information about a transmission mode of the firstsignal or a first control channel, configuration information about anacquisition mode for the transmission mode of the first signal or thefirst control channel, or configuration information about adetermination manner of the N transmission modes corresponding to thefirst signal or the first control channel from the M transmission modesets.

In an embodiment, the first signal satisfies one of the followingcharacteristics.

In the at least one piece of second-type control information, atransmission mode of the first signal and a transmission mode of asecond signal share configuration information.

The transmission mode of the first signal and a receiving mode of thesecond signal share configuration information.

A transmission direction of the first signal is different from atransmission direction of the second signal.

In an embodiment, the first signal satisfies at least one of thefollowing characteristics.

The transmission mode of the first signal and the transmission mode ofthe second signal share the configuration information, where resourcegranularities corresponding to different transmission modes of the firstsignal in the configuration information are different from resourcegranularities corresponding to different transmission modes of thesecond signal in the configuration information.

The transmission mode of the first signal and the receiving mode of thesecond signal share the configuration information, where resourcegranularities corresponding to different transmission modes of the firstsignal in the configuration information are different from resourcegranularities corresponding to different receiving modes of the secondsignal in the configuration information.

The transmission mode of the first signal and the transmission mode ofthe second signal share the configuration information, where resourceproportions occupied by the different transmission modes of the firstsignal in the configuration information are different from resourceproportions occupied by the different transmission modes of the secondsignal in the configuration information.

The transmission mode of the first signal and the receiving mode of thesecond signal share the configuration information, where resourceproportions occupied by the different transmission modes of the firstsignal in the configuration information are different from resourceproportions occupied by the different receiving modes of the secondsignal in the configuration information. The transmission mode of thefirst signal and the transmission mode of the second signal share theconfiguration information, where multiplexing manners of the differenttransmission modes of the first signal in the configuration informationare different from multiplexing manners of the different transmissionmodes of the second signal in the configuration information.

The transmission mode of the first signal and the receiving mode of thesecond signal share the configuration information, where multiplexingmanners of the different transmission modes of the first signal in theconfiguration information are different from multiplexing manners of thedifferent receiving modes of the second signal in the configurationinformation.

A resource includes at least one of the following resources: a timedomain resource, a frequency domain resource or a reference signal portresource.

As shown in FIG. 2 , the embodiments of the present disclosure furtherprovide a signal transmission apparatus. The apparatus includes: anacquisition module 21, a first determination module 22 and a firstsending module 23.

The acquisition module 21 is configured to acquire M transmission modesets.

The first determination module 22 is configured to determine Ntransmission mode sets for sending a first signal from the Mtransmission mode sets acquired by the acquisition module 21.

The first sending module 23 is configured to send the first signal to asecond communication node by using the N transmission mode setsdetermined by the first determination module 22.

One transmission mode set includes at least one transmission mode, M isa natural number, and N is a natural number less than or equal to M.

In an embodiment, the first signal is at least one of the followingsignals: a control channel signal, a data channel signal, a demodulationreference signal, or a measurement reference signal.

In an embodiment, the acquisition module is configured to acquire the Mtransmission mode sets in at least one of the following manners.

The M transmission mode sets are obtained by acquiring transmissionmodes associated with a plurality of pieces of first-type controlinformation included in the first signal.

Second-type control information is received, and the M transmission modesets are obtained according to the second-type control information.

The M transmission mode sets are obtained according to configurationinformation about a to-be-detected search space of a control channel ina time unit associated with the first signal.

The M transmission mode sets are obtained according to configurationinformation about a to-be-detected transmission mode of the controlchannel in the time unit associated with the first signal.

The M transmission mode sets are obtained according to configurationinformation about a to-be-detected receiving mode of the control channelin the time unit associated with the first signal.

The M transmission mode sets are obtained according to configurationinformation about a detected search space where the control channel islocated in the time unit associated with the first signal.

The M transmission mode sets are obtained according to configurationinformation about a detected transmission mode of the control channel inthe time unit associated with the first signal.

The M transmission mode sets are obtained according to configurationinformation about a detected receiving mode of the control channel inthe time unit associated with the first signal.

The M transmission mode sets are obtained by acquiring a transmissionmode of a second signal associated with the first signal.

The M transmission mode sets are obtained by acquiring a receiving modeof the second signal associated with the first signal.

Information about the M transmission mode sets is acquired in animplicit manner.

In an embodiment, the acquisition module is configured to receive thesecond-type control information and obtain the M transmission mode setsaccording to the second-type control information in at least one offollowing included manners.

The second-type control information includes information about atransmission mode set of a control channel signal sent by a thirdcommunication node, and the first communication node obtains the Mtransmission mode sets according to the transmission mode set of thecontrol channel signal sent by the third communication node; where thethird communication node and the second communication node are a samecommunication node or different communication nodes.

The second-type control information includes information about areceiving mode set of the control channel signal received by the firstcommunication node, and the first communication node obtains the Mtransmission mode sets according to the information about the receivingmode set of the control channel signal received by the firstcommunication node.

The second-type control information includes a plurality of pieces ofcontrol information, and the M transmission mode sets are obtainedaccording to the plurality of pieces of control information. Thesecond-type control information includes first control information andsecond control information, where the first control informationindicates information about a transmission mode resource pool shared bydifferent signal types, the second control information indicates theinformation about the M transmission mode sets, and the M transmissionmode sets belong to the transmission mode resource pool.

The second-type control information includes information about a firstreference signal, and the first communication node acquires theinformation about the M transmission mode sets according to the firstreference signal.

The second-type control information includes information about a secondreference signal, and the first communication node acquires theinformation about the M transmission mode sets according to the secondreference signal.

The second-type control information includes information about asynchronization signal, and the first communication node acquires theinformation about the M transmission mode sets according to theinformation about the synchronization signal.

The second-type control information is configured for triggering sendingof information about the first signal and retransmission joint coding ofthe second signal associated with the first signal by using amulti-transmission mode set.

The second-type control information indicates information about a groupof first reference signals or information about a group of secondreference signals, and the first communication node acquires the Mtransmission mode sets according to the group of first reference signalsor the group of second reference signals.

The transmission direction of the first reference signal is the same asa transmission direction of the first signal, and the transmissiondirection of the second reference signal is different from thetransmission direction of the first signal.

In an embodiment, the first determination module is configured todetermine the N transmission mode sets for sending the first signal fromthe M transmission mode sets by using at least one combination of thefollowing manners.

Second-type control information is received, and the N transmission modesets among the M transmission mode sets are determined according to anindication of the second-type control information.

The N transmission mode sets are determined according to timeinformation corresponding to the M transmission mode sets.

The N transmission mode sets are determined according to a type of asecond signal corresponding to the M transmission mode sets.

The N transmission mode sets are determined according to a type offirst-type control information corresponding to the M transmission modesets.

The N transmission mode sets are determined according to a priorityorder corresponding to the M transmission mode sets.

The N transmission mode sets are determined according to time domaindensity information corresponding to the M transmission mode sets.

The N transmission mode sets are determined according to receivingquality of the second signal corresponding to the M transmission modesets.

The N transmission mode sets are determined according to whether apredetermined condition is satisfied.

The N transmission mode sets are determined according to informationabout a resource occupied by the first signal, where the informationabout the resource includes at least one of the following resources: atime domain resource, a frequency domain resource, a demodulationreference signal port resource or a sending antenna port resource.

In an embodiment, the step of determining the N transmission mode setsaccording to the time information corresponding to the M transmissionmode sets includes: selecting N transmission mode sets corresponding tothe latest time from the M transmission mode sets; where timecorresponding to the one transmission mode set is time at which a secondsignal corresponding to the at least one transmission mode of the onetransmission mode set is located, or the time corresponding to the onetransmission mode set is time at which the first communication nodeacquires the at least one transmission mode of the one transmission modeset.

The step of determining the N transmission mode sets according to thetype of the second signal corresponding to the M transmission mode setsincludes: selecting transmission mode sets corresponding to a secondsignal having a high priority as the N transmission mode sets accordingto a priority of the type of the second signal, where the type of thesecond signal includes: a control channel signal, a data channel signaland a measurement reference signal, where the control channel signal,the data channel signal and the measurement reference signal are indescending order of priority.

The step of determining the N transmission mode sets according to thetype of the first-type control information corresponding to the Mtransmission mode sets includes: selecting transmission mode setsassociated with N pieces of first-type control information having thehighest priorities as the N transmission mode sets; where the priorityof the first-type control information is determined according to atleast one of: ACK/NACK feedback information or channel state informationfeedback, a delay requirement of control information, a periodcharacteristic of control information, or an information sizecharacteristic of control information. The step of determining the Ntransmission mode sets according to the priority order corresponding tothe M transmission mode sets includes: selecting N transmission modesets having the highest priorities from the M transmission mode sets.

The step of determining the N transmission mode sets according to thetime domain density information corresponding to the M transmission modesets includes: selecting N transmission mode sets corresponding to thehighest time domain densities from the M transmission mode sets. Thestep of determining the N transmission mode sets according to thereceiving quality of the second signal corresponding to the Mtransmission mode sets includes: receiving second signals, selecting Nsecond signals having the best receiving quality, and obtaining the Ntransmission mode sets according to receiving modes of the selectedsecond signals.

In an embodiment, the N transmission mode sets includes a firsttransmission mode set and/or a second transmission mode set, where thestep of determining the N transmission mode sets according to whetherthe predetermined condition is satisfied includes the following cases.

In response to determining that the predetermined condition issatisfied, it is determined to use the first transmission mode set oruse the first transmission mode set and the second transmission modeset.

In response to determining that the predetermined condition is notsatisfied, it is determined to use the second transmission mode set.

In an embodiment, whether the predetermined condition is satisfied isdetermined through at least one of the following manners.

The second-type control information is received, where the second-typecontrol information indicates a receiving situation of a signalpreviously sent by a first communication node, and whether thepredetermined condition is satisfied is determined according to thereceiving situation. The second-type control information is received,where the second-type control information indicates whether thepredetermined condition is satisfied.

Whether the predetermined condition is satisfied is determined accordingto configuration information about a to-be-detected search space of acontrol channel in a time unit associated with the first signal.

Whether the predetermined condition is satisfied is determined accordingto configuration information about a to-be-detected transmission mode ofthe control channel in the time unit associated with the first signal.

Whether the predetermined condition is satisfied is determined accordingto configuration information about a to-be-detected receiving mode ofthe control channel in the time unit associated with the first signal.

Whether the predetermined condition is satisfied is determined accordingto configuration information about a detected search space where thecontrol channel is located in the time unit associated with the firstsignal.

Whether the predetermined condition is satisfied is determined accordingto configuration information about a detected transmission mode of thecontrol channel in the time unit associated with the first signal.

Whether the predetermined condition is satisfied is determined accordingto configuration information about a detected receiving mode of thecontrol channel in the time unit associated with the first signal.

Whether the predetermined condition is satisfied is determined accordingto configuration information about a transmission mode of a secondsignal associated with the first signal in the time unit associated withthe first signal.

Whether the predetermined condition is satisfied is determined accordingto configuration information about a receiving mode of the second signalassociated with the first signal in the time unit associated with thefirst signal.

Whether the predetermined condition is satisfied is determined accordingto a signal type of the first signal.

When the first signal is the control channel, whether the predeterminedcondition is satisfied is determined according to a type of the controlchannel.

In an embodiment, the predetermined condition includes at least one ofthe following conditions. The first signal is a retransmission signal.

A second signal associated with the first signal is the retransmissionsignal.

The second-type control information is detected in a first search space.

The second-type control information is detected in both the first searchspace and a second search space.

Configuration information about a to-be-detected search space of acontrol channel in a time unit associated with the first signal includesthe first search space.

Configuration information about a to-be-detected transmission mode ofthe control channel in the time unit associated with the first signalincludes a third transmission mode.

Configuration information about a to-be-detected receiving mode of thecontrol channel in the time unit associated with the first signalincludes a first receiving mode.

Configuration information about a detected search space where thecontrol channel is located in the time unit associated with the firstsignal includes the first search space.

Configuration information about a detected transmission mode of thecontrol channel in the time unit associated with the first signalincludes the third transmission mode.

Configuration information about a detected receiving mode of the controlchannel in the time unit associated with the first signal includes thefirst receiving mode.

Configuration information about a transmission mode of the second signalassociated with the first signal in the time unit associated with thefirst signal includes the third transmission mode.

Configuration information about a receiving mode of the second signalassociated with the first signal in the time unit associated with thefirst signal includes the first receiving mode.

The first search space is associated with the first transmission modeset, and/or the first receiving mode is associated with the firsttransmission mode set, and/or the third transmission mode is associatedwith the first transmission mode set; and/or the second search space isassociated with the second transmission mode set.

In an embodiment, the time unit associated with the first signal is atleast one of the following time units: a time unit where the firstsignal is located; a time unit where the second signal associated withthe first signal is located; or a time unit belonging to an agreed timeunit window.

In an embodiment, the second signal is a signal received by the firstcommunication node.

The second signal includes at least one of the following signals: thecontrol channel signal, the data channel signal, a demodulationreference signal, or the measurement reference signal.

The first signal includes response information about the second signal,or the second signal includes configuration information about the firstsignal, or the configuration information about the first signal includesrelevant information about the second signal.

In an embodiment, the first sending module is configured to send thefirst signal to the second communication node by using the Ntransmission mode sets through at least one combination of the followingmanners.

The first signal is sent in a time division manner by using the Ntransmission mode sets.

The first signal is sent in a frequency division manner by using the Ntransmission mode sets.

One transmission mode corresponds to one demodulation reference signalport group, and the first signal is sent on each port of the onedemodulation reference signal port group in the corresponding onetransmission mode.

A plurality of transmission modes correspond to one demodulationreference signal port, and the first signal is sent on the onedemodulation reference signal port in the corresponding plurality oftransmission modes.

One transmission mode corresponds to one antenna port group, and thefirst signal is sent on each port of the one antenna port group in thecorresponding one transmission mode.

The number of time granularities occupied by the N transmission modesets is determined according to a value of N and the number ofdemodulation reference signal ports or sending antenna ports allocatedto the first signal.

In an embodiment, the first determination module is further configuredto perform an operation described below.

Demodulation reference signal pattern information about the first signalis determined according to a value of N and the number of demodulationreference signal ports or sending antenna ports allocated to the firstsignal.

Alternatively, the demodulation reference signal pattern informationabout the first signal is determined according to the value of N.

In an embodiment, the N transmission mode sets satisfy one of thefollowing characteristics.

The N transmission mode sets include a first transmission mode set and asecond transmission mode set, where information about the first signalsent in the first transmission mode set is a subset of information sentin the second transmission mode set.

Information about the first signal sent in different transmission modesets among the N transmission mode sets is the same.

The information about the first signal sent in the differenttransmission mode sets among the N transmission mode sets is different.

In an embodiment, the apparatus further includes: a second determinationmodule configured to perform an operation described below.

An acquisition mode for the M transmission mode sets is determined.

In an embodiment, the acquisition mode for the M transmission mode setsis determined in one of the following manners.

The acquisition mode is determined according to a type of the firstsignal.

Second-type control information is received, where the second-typecontrol information indicates the acquisition mode.

The acquisition mode is determined according to indication informationabout whether uplink and downlink reciprocity is established.

When the first signal is a first control channel signal, the acquisitionmode is determined according to a type of the first control channelsignal.

In an embodiment, a reception module is further included and isconfigured to: receive a plurality of pieces of configurationinformation, where different configuration information includesconfiguration information about different types of first signals; and/orreceive a plurality of pieces of configuration information, wheredifferent configuration information includes configuration informationabout different types of first control channels; where the first signalis a first control channel signal.

The plurality of pieces of configuration information includes at leastone of: configuration information about a transmission mode of the firstsignal or a first control channel, configuration information about anacquisition mode for the transmission mode of the first signal or thefirst control channel, or configuration information about adetermination manner of the N transmission modes corresponding to thefirst signal or the first control channel from the M transmission modesets.

In an embodiment, the type of the first control channel signal includesat least one of the following types.

The first control channel is periodically sent.

The first control channel is aperiodically sent.

The first control channel is semi-periodically sent.

A time domain of the first control channel is less than a predeterminedthreshold.

The time domain of the first control channel is greater than thepredetermined threshold, where the first control channel includes datachannel response information.

The first control channel includes channel state feedback information.

The first control channel is a control channel over a first network.

The first control channel is a control channel over a second network.

Duration of the first control channel is less than a predeterminedthreshold.

The duration of the first control channel is greater than thepredetermined threshold.

The first control channel is a long-format control channel.

The first control channel is a short-format control channel.

In an embodiment, the first signal satisfies at least one of thefollowing characteristics.

A transmission mode of the first signal and a transmission mode of asecond signal share configuration information.

The transmission mode of the first signal and a receiving mode of thesecond signal share configuration information.

A transmission direction of the first signal is different from atransmission direction of the second signal.

In an embodiment, the first signal satisfies at least one of thefollowing characteristics.

The transmission mode of the first signal and the transmission mode ofthe second signal share the configuration information, where resourcegranularities corresponding to different transmission modes of the firstsignal in the configuration information are different from resourcegranularities corresponding to different transmission modes of thesecond signal in the configuration information.

The transmission mode of the first signal and the receiving mode of thesecond signal share the configuration information, where resourcegranularities corresponding to different transmission modes of the firstsignal in the configuration information are different from resourcegranularities corresponding to different receiving modes of the secondsignal in the configuration information. The transmission mode of thefirst signal and the transmission mode of the second signal share theconfiguration information, where resource proportions occupied by thedifferent transmission modes of the first signal in the configurationinformation are different from resource proportions occupied by thedifferent transmission modes of the second signal in the configurationinformation.

The transmission mode of the first signal and the receiving mode of thesecond signal share the configuration information, where resourceproportions occupied by the different transmission modes of the firstsignal in the configuration information are different from resourceproportions occupied by the different receiving modes of the secondsignal in the configuration information. The transmission mode of thefirst signal and the transmission mode of the second signal share theconfiguration information, where multiplexing manners of the differenttransmission modes of the first signal in the configuration informationare different from multiplexing manners of the different transmissionmodes of the second signal in the configuration information.

The transmission mode of the first signal and the receiving mode of thesecond signal share the configuration information, where multiplexingmanners of the different transmission modes of the first signal in theconfiguration information are different from multiplexing manners of thedifferent receiving modes of the second signal in the configurationinformation.

A resource includes at least one of the following resources: a timedomain resource, a frequency domain resource or a reference signal portresource.

It is to be noted that: the above-mentioned embodiment provides a signaltransmission apparatus which, when sending a signal, is exemplifiedmerely by the division of the above-mentioned program modules, and inpractical applications, the above-mentioned processing may bedistributed and performed by different program modules according toneeds, that is, the internal structure of the apparatus is divided intodifferent program modules to perform all or part of the above-mentionedprocessing. In addition, the signal transmission apparatus in theabove-mentioned embodiment has the same concept as the signaltransmission method in the method embodiment, and a specificimplementation process refers to that in the method embodiment, which isnot repeated herein.

The embodiments of the present disclosure further provide a controlinformation sending apparatus. The apparatus includes a second sendingmodule.

The second sending module is configured to send at least one piece ofsecond-type control information to a first communication node so thatthe first communication node acquires M transmission mode sets and/ordetermines N transmission mode sets for sending a first signal from theM transmission mode sets.

One transmission mode set includes at least one transmission mode, M isa natural number, and N is a natural number less than or equal to M.

In an embodiment, the apparatus further includes: a first receptionmodule configured to receive, according to the at least one piece ofsecond-type control information, the first signal sent by the firstcommunication node.

In an embodiment, when the second sending module sends the at least onepiece of second-type control information to the first communication nodeso that the first communication node acquires the M transmission modesets, the at least one piece of second-type control information has atleast one of the following characteristics.

The second-type control information includes information about atransmission mode set of a control channel signal sent by the thirdcommunication node.

The second-type control information includes information about areceiving mode set of the control channel signal received by the firstcommunication node.

The second-type control information includes a plurality of pieces ofcontrol information, and the M transmission mode sets are obtainedaccording to the plurality of pieces of control information.

The second-type control information includes first control informationand second control information, where the first control informationindicates information about a transmission mode resource pool shared bydifferent signal types, the second control information indicatesinformation about the M transmission mode sets, and the M transmissionmode sets belong to the transmission mode resource pool.

The second-type control information includes information about a firstreference signal.

The second-type control information includes information about a secondreference signal.

The second-type control information includes information about asynchronization signal.

The second-type control information includes configuration informationabout a search space of a control channel.

The second-type control information triggers sending of informationabout the first signal and retransmission joint coding of a secondsignal associated with the first signal by using a multi-transmissionmode set.

The second-type control information indicates a group of informationabout the first reference signal or a group of information about thesecond reference signal.

A transmission direction of the first reference signal is different froma transmission direction of the second reference signal.

The transmission direction of the first reference signal is the same asa transmission direction of the first signal, and the transmissiondirection of the second reference signal is different from thetransmission direction of the first signal.

In an embodiment, the step in which the second sending module sends theat least one piece of second-type control information to the firstcommunication node so that the first communication node determines the Ntransmission mode sets for sending the first signal from the Mtransmission mode sets includes a step described below.

The N transmission mode sets for sending the first signal are directlyindicated through the at least one piece of second-type controlinformation.

Alternatively, second-type control information carrying an indicationindicating a receiving situation of a signal previously sent by thefirst communication node is sent to the first communication node so thatthe first communication node determines whether a predeterminedcondition is satisfied according to the receiving situation and therebydetermines the N transmission mode sets.

Alternatively, second-type control information carrying an indicationindicating whether the predetermined condition is satisfied is sent tothe first communication node so that the first communication nodedetermines the N transmission mode sets.

In an embodiment, the at least one piece of second-type controlinformation satisfies at least one of the following characteristics.

The at least one piece of second-type control information furthercarries an indication indicating an acquisition mode so that the firstcommunication node determines an acquisition mode for the M transmissionmode sets.

The second-type control information includes a plurality of pieces ofconfiguration information, where different configuration informationincludes configuration information about different types of signals.

The second-type control information includes a plurality of pieces ofconfiguration information, where different configuration informationincludes configuration information about different types of firstcontrol channels.

The plurality of pieces of configuration information includes at leastone of: configuration information about a transmission mode of the firstsignal or a first control channel, configuration information about anacquisition mode for the transmission mode of the first signal or thefirst control channel, or configuration information about adetermination manner of the N transmission modes corresponding to thefirst signal or the first control channel from the M transmission modesets.

In an embodiment, the first signal satisfies one of the followingcharacteristics.

In the at least one piece of second-type control information, atransmission mode of the first signal and a transmission mode of asecond signal share configuration information.

The transmission mode of the first signal and a receiving mode of thesecond signal share configuration information.

A transmission direction of the first signal is different from atransmission direction of the second signal.

In an embodiment, the first signal satisfies at least one of thefollowing characteristics.

The transmission mode of the first signal and the transmission mode ofthe second signal share the configuration information, where resourcegranularities corresponding to different transmission modes of the firstsignal in the configuration information are different from resourcegranularities corresponding to different transmission modes of thesecond signal in the configuration information.

The transmission mode of the first signal and the receiving mode of thesecond signal share the configuration information, where resourcegranularities corresponding to different transmission modes of the firstsignal in the configuration information are different from resourcegranularities corresponding to different receiving modes of the secondsignal in the configuration information.

The transmission mode of the first signal and the transmission mode ofthe second signal share the configuration information, where resourceproportions occupied by the different transmission modes of the firstsignal in the configuration information are different from resourceproportions occupied by the different transmission modes of the secondsignal in the configuration information.

The transmission mode of the first signal and the receiving mode of thesecond signal share the configuration information, where resourceproportions occupied by the different transmission modes of the firstsignal in the configuration information are different from resourceproportions occupied by the different receiving modes of the secondsignal in the configuration information. The transmission mode of thefirst signal and the transmission mode of the second signal share theconfiguration information, where multiplexing manners of the differenttransmission modes of the first signal in the configuration informationare different from multiplexing manners of the different transmissionmodes of the second signal in the configuration information.

The transmission mode of the first signal and the receiving mode of thesecond signal share the configuration information, where multiplexingmanners of the different transmission modes of the first signal in theconfiguration information are different from multiplexing manners of thedifferent receiving modes of the second signal in the configurationinformation.

A resource includes at least one of the following resources: a timedomain resource, a frequency domain resource or a reference signal portresource.

The embodiments of the present disclosure further provide a signaltransmission system. The system includes: a first communication node, asecond communication node and a third communication node, where thethird communication node and the second communication node are a samecommunication node or different communication nodes.

The third communication node is configured to send at least one piece ofsecond-type control information to the first communication node.

The first communication node is configured to acquire, according to theat least one piece of second-type control information, M transmissionmode sets and/or determine N transmission mode sets for sending a firstsignal from the M transmission mode sets.

The first communication node is configured to send the first signal tothe second communication node by using the N transmission mode sets.

The second communication node is configured to receive the first signalaccording to the N transmission mode sets.

One transmission mode set includes at least one transmission mode, M isa natural number, and N is a natural number less than or equal to M.

In an embodiment, when the first communication node acquires the Mtransmission mode sets according to the at least one piece ofsecond-type control information, the at least one piece of second-typecontrol information has at least one of the following characteristics.

The second-type control information includes information about atransmission mode set of a control channel signal sent by the thirdcommunication node.

The second-type control information includes information about areceiving mode set of the control channel signal received by the firstcommunication node.

The second-type control information includes a plurality of pieces ofcontrol information, and the M transmission mode sets are obtainedaccording to the plurality of pieces of control information. Thesecond-type control information includes first control information andsecond control information, where the first control informationindicates information about a transmission mode resource pool shared bydifferent signal types, the second control information indicatesinformation about the M transmission mode sets, and the M transmissionmode sets belong to the transmission mode resource pool.

The second-type control information includes information about a firstreference signal.

The second-type control information includes information about a secondreference signal.

The second-type control information includes information about asynchronization signal.

The second-type control information includes configuration informationabout a search space of a control channel.

The second-type control information triggers sending of informationabout the first signal and retransmission joint coding of a secondsignal associated with the first signal by using a multi-transmissionmode set.

The second-type control information indicates a group of informationabout the first reference signal or a group of information about thesecond reference signal.

A transmission direction of the first reference signal is different froma transmission direction of the second reference signal; and thetransmission direction of the first reference signal is the same as atransmission direction of the first signal, and the transmissiondirection of the second reference signal is different from thetransmission direction of the first signal.

In an embodiment, when the third communication node sends the at leastone piece of second-type control information to the first communicationnode, and the first communication node determines, according to the atleast one piece of second-type control information, the N transmissionmode sets for sending the first signal from the M transmission modesets,

-   -   the third communication node is configured to directly indicate,        through the at least one piece of second-type control        information, the N transmission mode sets for sending the first        signal; or    -   the third communication node is configured to send second-type        control information carrying an indication indicating a        receiving situation of a signal previously sent by the first        communication node to the first communication node, and the        first communication node determines whether a predetermined        condition is satisfied according to the receiving situation and        thereby determines the N transmission mode sets; or    -   the third communication node is configured to send second-type        control information carrying an indication indicating whether        the predetermined condition is satisfied to the first        communication node, and the first communication node determines        the N transmission mode sets.

In an embodiment, the at least one piece of second-type controlinformation satisfies at least one of the following characteristics.

The at least one piece of second-type control information furthercarries an indication indicating an acquisition mode, and the firstcommunication node determines an acquisition mode for the M transmissionmode sets according to the at least one piece of second-type controlinformation.

The second-type control information includes a plurality of pieces ofconfiguration information, where different configuration informationincludes configuration information about different types of signals.

The second-type control information includes a plurality of pieces ofconfiguration information, where different configuration informationincludes configuration information about different types of firstcontrol channels.

The plurality of pieces of configuration information includes at leastone of: configuration information about a transmission mode of the firstsignal or a first control channel, configuration information about anacquisition mode for the transmission mode of the first signal or thefirst control channel, or configuration information about adetermination manner of the N transmission modes corresponding to thefirst signal or the first control channel from the M transmission modesets.

In an embodiment, the first signal satisfies one of the followingcharacteristics.

In the at least one piece of second-type control information, atransmission mode of the first signal and a transmission mode of asecond signal share configuration information.

The transmission mode of the first signal and a receiving mode of thesecond signal share configuration information.

A transmission direction of the first signal is different from atransmission direction of the second signal.

In an embodiment, the first signal satisfies at least one of thefollowing characteristics.

The transmission mode of the first signal and the transmission mode ofthe second signal share the configuration information, where resourcegranularities corresponding to different transmission modes of the firstsignal in the configuration information are different from resourcegranularities corresponding to different transmission modes of thesecond signal in the configuration information.

The transmission mode of the first signal and the receiving mode of thesecond signal share the configuration information, where resourcegranularities corresponding to different transmission modes of the firstsignal in the configuration information are different from resourcegranularities corresponding to different receiving modes of the secondsignal in the configuration information.

The transmission mode of the first signal and the transmission mode ofthe second signal share the configuration information, where resourceproportions occupied by the different transmission modes of the firstsignal in the configuration information are different from resourceproportions occupied by the different transmission modes of the secondsignal in the configuration information.

The transmission mode of the first signal and the receiving mode of thesecond signal share the configuration information, where resourceproportions occupied by the different transmission modes of the firstsignal in the configuration information are different from resourceproportions occupied by the different receiving modes of the secondsignal in the configuration information. The transmission mode of thefirst signal and the transmission mode of the second signal share theconfiguration information, where multiplexing manners of the differenttransmission modes of the first signal in the configuration informationare different from multiplexing manners of the different transmissionmodes of the second signal in the configuration information.

The transmission mode of the first signal and the receiving mode of thesecond signal share the configuration information, where multiplexingmanners of the different transmission modes of the first signal in theconfiguration information are different from multiplexing manners of thedifferent receiving modes of the second signal in the configurationinformation.

A resource includes at least one of the following resources: a timedomain resource, a frequency domain resource or a reference signal portresource.

It is to be noted that: the above-mentioned embodiment provides acontrol information sending apparatus which, when sending controlinformation, is exemplified merely by the division of theabove-mentioned program modules, and in practical applications, theabove-mentioned processing may be distributed and performed by differentprogram modules according to needs, that is, the internal structure ofthe apparatus is divided into different program modules to perform allor part of the above-mentioned processing. In addition, the controlinformation sending apparatus in the above-mentioned embodiment has thesame concept as the control information sending method in the methodembodiment, and a specific implementation process refers to that in themethod embodiment, which is not repeated herein.

Application examples are described below.

Application Example 1

In the present application example, a terminal (i.e., the secondcommunication node) selects N sending beam sets (i.e., the Ntransmission mode sets) from M sending beam sets (i.e., transmissionmode sets) for sending an uplink control channel. M is a natural number,and N is a natural number less than or equal to M.

As shown in FIG. 3 , the terminal receives a downlink data channeland/or a downlink measurement reference signal on {slotn1, slotn2,slotn3} (where a slot denotes a time slot), and/or the terminal receiveschannel quality reporting trigger control information, and a basestation (the first communication node) indicates that ACK/NACK responsecontrol information for the downlink data channel and/or channel stateinformation feedback need to be sent on slotn4. When a sending beam ofthe uplink control channel is acquired according to a sending beam of adownlink control channel (or when the sending beam of the uplink controlchannel is acquired according to a receiving beam for receiving thedownlink control channel, if the sending beam of the uplink controlchannel is acquired according to the sending beam of the downlinkcontrol channel, the sending beam of the uplink control channel is alsoreferred to as acquired through the receiving beam for receiving thedownlink control channel, and the base station configures for theterminal merely information about the sending beam of the downlinkcontrol channel, not information about the receiving beam of thedownlink control channel), the sending beams on the {slotn1, slotn2,slotn3} are different from a sending beam of a downlink control channelrelated to a downlink data channel, and/or the transmission modes of the{slotn1, slotn2, slotn3} are different from a transmission mode of adownlink control channel triggering the channel quality feedback. Forexample, for sending beam 1 to sending beam 3 in FIG. 3 , a receivingbeam set used by the terminal for receiving a control channel using{sending beam 1 to sending beam 3} is sequentially {receiving beam 1 toreceiving beam 3}, the terminal obtains a sending beam set {sending beam1′, sending beam 2′, sending beam 3′} (i.e., the M=3 transmission modesets, where for simplicity, merely one sending beam is included in eachtransmission mode set, and the present embodiment does not exclude thateach transmission mode set among the M transmission mode sets includesmore than one sending beam) for sending the uplink control channelaccording to uplink and downlink reciprocity and according to {receivingbeam 1 to receiving beam 3} for receiving the downlink control channel,and the terminal needs to select a sending beam from these three sendingbeams for sending the uplink control channel.

The terminal selects, according to time information corresponding to thethree sending beams, a sending beam for sending the uplink controlchannel, such as selecting a sending beam corresponding to the latesttime, as shown in FIG. 3 , the sending beam 1′ corresponds to a timeunit slotn1, the sending beam 2′ corresponds to a time unit slotn2, andthe sending beam 3′ corresponds to a time unit slotn3, at this time, thesending beam 3′ corresponding to the latest time slotn3 is selected forslotn4 according to the time information, and the uplink control channelis sent on slotn4 using the sending beam 3′.

At this time, a problem exists that the terminal misses detection of thePDCCH on slotn3, and thus the terminal sends the uplink control channelbased on the sending beam 2′, but if the sending beam 2′ and the sendingbeam 3′ correspond to different receiving beams of the base station inuplink transmission and if the base station uses a receiving beam 3corresponding to the sending beam 3′ to receive the uplink controlchannel on slotn4, a problem exists that the base station cannot receivethe uplink control channel fed back by the terminal. One way is that thebase station receives the uplink control channel on slotn4 usingreceiving beam 1 to receiving beam 3, which results in a waste ofreceiving resources of the base station. Another way is as follows: thebase station firstly uses the receiving beam 3 on slotn4 to receive theuplink control channel sent by the terminal, if the uplink controlchannel is not received, it indicates that the current channelenvironment of the terminal is poor, and the base station configures,through control signaling, a sending beam used by the terminal forsubsequently sending the PUCCH.

In FIG. 3 , slotn1 to slotn3 have a chronological order, and may becontinuous in the time domain or discrete in the time domain. Slotn4 maybe the same slot as slotn3 or may be a slot after slotn3, and of courseFIG. 3 is merely an example and another time unit like slot may be used,such as a mini-slot, a sub-frame, etc.

In FIG. 3 , the transmission mode of the uplink control channel isobtained according to the transmission mode of the downlink controlchannel, that is, the transmission mode pattern of the downlink controlchannel is notified by control signaling, and the terminal receives thedownlink control channel using a suitable receiving beam based on thenotified transmission mode and then obtains, according to the uplink anddownlink reciprocity, the transmission mode of the uplink controlchannel according to the receiving mode. In another implementation modeof the present embodiment, as shown in FIG. 4 , the base stationnotifies, through the control signaling, the terminal of the receivingmode pattern for receiving or detecting the downlink control channel,and the terminal obtains M transmission mode sets according to uplinkand downlink reciprocity based on the notified receiving beam patternand then selects N transmission modes from the M transmission mode setsto send the uplink control channel.

In the implementation mode described above, the M transmission mode setsare obtained from the transmission mode of the downlink control channel(or from the receiving beam for receiving the downlink control channel).In another implementation mode of the present embodiment, M downlinkcontrol channels may also notify the terminal of information about thetransmission mode used by the terminal to send the uplink controlchannel, for example, in the DCI notifying the PDSCH or in the DCItriggering the CSI reporting in {slotn1 to slotn3} in FIG. 3 , the basestation notifies the terminal of the transmission mode configured forsending the uplink control information, and thus three transmissionmodes exist, i.e., the M transmission mode sets.

Application Example 2

In the present application example, a terminal (i.e., the firstcommunication node) selects N sending beams from M sending beam sets(i.e., transmission mode sets) for sending an uplink control channel. Mis a natural number, and N is a natural number less than or equal to M.The terminal selects the N transmission mode sets according to timeinformation corresponding to the M transmission modes and the types ofsignals related to the transmission modes.

As shown in FIG. 3 , the terminal receives a downlink data channelsignal and/or a downlink measurement reference signal on{slotn1,slotn2,slotn3} and the base station (i.e., the secondcommunication node) indicates ACK/NACK response control information fora downlink data channel and/or channel state information feedback needto be sent on slotn4. When a sending beam of the uplink control channelis acquired according to a sending beam of a downlink control channel(or when the sending beam of the uplink control channel is acquiredaccording to a receiving beam for receiving the downlink controlchannel), transmission modes on the {slotn1, slotn2, slotn3} aredifferent from a transmission mode of a downlink control channel relatedto the downlink data channel. For example, for sending beam 1 to sendingbeam 3 in FIG. 3 , a receiving beam set {receiving beam 1 to receivingbeam 3} for receiving {sending beam 1 to sending beam 3} iscorrespondingly obtained, the terminal obtains, according to uplink anddownlink reciprocity and according to {receiving beam 1 to receivingbeam 3} for receiving the downlink control channel, {sending beam 1′,sending beam 2′, sending beam 3′} (i.e. the M=3 transmission mode sets)for sending the uplink control channel, and the terminal needs to selecta sending beam from the three sending beams for sending the uplinkcontrol channel signal.

In the present application example, the N transmission mode sets areselected according to the time information corresponding to the Mtransmission modes and the types of signals related to the Mtransmission modes, as shown in FIG. 5 , that is, when the terminalreceives a downlink data channel (such as a PDSCH) on slotn3, a downlinkmeasurement reference signal (preferably, the downlink measurementreference signal is a periodically triggered downlink measurementreference signal, or a downlink control channel triggering the downlinkmeasurement reference signal also exists) is also received, and/ordownlink control information triggering channel state information (CSI)reporting also exists. As shown in FIG. 5 , DCI1 and DCI2 exist inslotn3, DCI1 is configured for notifying relevant information of thePDSCH, a sending beam of a base station corresponding to DCI1 is a beam31, DCI2 is configured for activating CSI reporting, and a sending beamof the base station corresponding to DCI2 is a beam 32. Then, theterminal on slotn4 needs to select one of the sending beams {31′, 32′}to send the uplink control channel. For example, the priority of theACK/NACK is higher than the priority of the CSI, and then the uplinkcontrol channel is sent by using the sending beam 31′, where the uplinksending beam 31′ corresponds to the sending beam 31 of the base station,and the uplink sending beam 32′ corresponds to the sending beam 32 ofthe base station, for example, according to uplink and downlinkreciprocity, the terminal obtains the uplink sending beam 32′ accordingto the receiving beam configured for receiving the sending beam 32 sentby the base station. The priority of the ACK/NACK may, of course, alsobe lower than the priority of the CSI, and then the terminal sends theuplink control channel by using 32′.

Among the above manners, firstly, a transmission mode is selectedaccording to the time information corresponding to the transmissionmode, and then N transmission mode sets are selected from the Mtransmission mode sets according to the signal type of the second signalcorresponding to the transmission mode. In another implementation modeof the present embodiment, the transmission mode is selected firstlyaccording to the signal type of the second signal corresponding to thetransmission mode, and when the signal types are the same, thetransmission mode is selected according to the time informationcorresponding to the transmission mode. As shown in FIG. 6 , althoughslotn3 is relatively late in time, PDSCH information is indicated inDCI2 in slotn2, DCI3 and DCI1 which trigger CSI reporting are indicatedin slotn3 and slotn1, respectively, and since the priority of thefeedback ACK/NACK is higher than the priority of CSI, the uplink controlchannel is sent by using a sending beam 2′. In the above implementationmode, the terminal sends the uplink control channel by selecting Ntransmission mode sets according to the time information correspondingto the M transmission mode sets and the signal types of the secondsignals corresponding to the M transmission mode sets. Anotherimplementation mode of the present embodiment is that the terminal sendsthe uplink control channel by selecting N transmission mode setsaccording to time information corresponding to the M transmission modesets and control information types (such as types of uplink controlinformation) corresponding to the M transmission mode sets. The types ofuplink control information include ACK/NACK uplink control informationand channel quality feedback information, and of course other types ofuplink control channel are not excluded.

Application Example 3

In the present application example, a terminal (i.e., the firstcommunication node) selects N sending beams from M sending beam sets(i.e., transmission mode sets) for sending an uplink control channel. Mis a natural number, and N is a natural number less than or equal to M.In the present application example, the terminal selects the M sendingbeam sets as the N sending beam sets.

As shown in FIG. 3 , the terminal receives a downlink data channelsignal and/or a downlink measurement reference signal on{slotn1,slotn2,slotn3} and a base station (i.e., the secondcommunication node) indicates ACK/NACK response control information fora downlink data channel and/or channel state information feedback needto be sent on slotn4. When a sending beam of the uplink control channelis acquired according to a sending beam of a downlink control channel(or when the sending beam of the uplink control channel is acquiredaccording to a receiving beam for receiving the downlink controlchannel), transmission modes on the {slotn1, slotn2, slotn3} aredifferent from a transmission mode of a downlink control channel relatedto the downlink data channel. For example, for sending beam 1 to sendingbeam 3 in FIG. 3 , a receiving beam set {receiving beam 1 to receivingbeam 3} for receiving {sending beam 1 to sending beam 3} iscorrespondingly obtained, the terminal obtains, according to uplink anddownlink reciprocity and according to {receiving beam 1 to receivingbeam 3} for receiving the downlink control channel, {sending beam 1′,sending beam 2′, sending beam 3′} (i.e. the M=3 transmission mode sets)for sending the uplink control channel, and the terminal needs to selecta sending beam from the three sending beams for sending an uplinkcontrol channel signal.

In the present application example, the M transmission mode sets areconfigured for sending the uplink control channel, that is, the Ntransmission mode sets are the M transmission mode sets. At this time, away is that uplink control information (UCI) sent on different sendingbeams is different (for example, in FIG. 3 , when the terminal sends theuplink control channel by using the {sending beam 1′, sending beam 2′,sending beam 3′}, feedback information for downlink slotn1 is sent onthe sending beam 1′, feedback information for downlink slotn2 is sent onthe sending beam 2′, and feedback information for downlink slotn3 issent on the sending beam 3′). Another way is that uplink controlinformation sent on different transmission modes is the same (forexample, in FIG. 3 , when the terminal sends the uplink control channelby using the {sending beam 1′, sending beam 2′, sending beam 3′},feedback information for downlink slotn1 to slotn3 needs to be sent oneach of {sending beam 1′, sending beam 2′, sending beam 3′}, where thefeedback information includes ACK/NACK and/or CSI information, and ofcourse other feedback information is not excluded).

The {sending beam 1′, sending beam 2′, sending beam 3′} may be sent inat least one of the following multiplexing manners: time divisionmultiplexing, frequency division multiplexing, different sending beamsoccupying different demodulation reference signal port groups, ordifferent sending beams occupying different sending antenna port groups.

Application Example 4

In the present application example, a terminal (i.e., the firstcommunication node) selects N sending beams from M sending beam sets(i.e., transmission mode sets) for sending an uplink control channel. Mis a natural number, and N is a natural number less than or equal to M.In the present application example, the terminal selects N transmissionmodes from M transmission mode sets according to indication informationabout control signaling information.

As shown in FIG. 3 , the terminal receives a downlink data channelsignal and/or a downlink measurement reference signal on{slotn1,slotn2,slotn3} and the base station (i.e., the secondcommunication node) indicates ACK/NACK response control information fora downlink data channel and/or channel state information feedback needto be sent on slotn4. When a sending beam of the uplink control channelis acquired according to a sending beam of a downlink control channel(or when the sending beam of the uplink control channel is acquiredaccording to a receiving beam for receiving the downlink controlchannel), transmission modes on the {slotn1, slotn2, slotn3} aredifferent from a transmission mode of a downlink control channel relatedto the downlink data channel. For example, for sending beam 1 to sendingbeam 3 in FIG. 3 , a receiving beam set {receiving beam 1 to receivingbeam 3} for receiving {sending beam 1 to sending beam 3} iscorrespondingly obtained, the terminal obtains, according to uplink anddownlink reciprocity and according to {receiving beam 1 to receivingbeam 3} for receiving the downlink control channel, {sending beam 1′,sending beam 2′, sending beam 3′} (i.e. the M=3 transmission mode sets)for sending the uplink control channel, and the terminal needs to selecta sending beam from the three sending beams for sending the uplinkcontrol channel signal.

In the present application example, the terminal selects the Ntransmission modes from the M transmission mode sets according to theindication information about the control signaling information, and asshown in FIG. 3 , in slotn4 or slotn3, the base station indicates,through the indication information, the N transmission modes selected bythe terminal from the M transmission mode sets. The selection of thesending beam 2′ in the {sending beam 1′ to sending beam 3′} to send theuplink control information is indicated in slotn4 or slotn3.

Alternatively, as shown in FIG. 3 , in slotn1 or in a time unit beforeslotn1, the control information indicates selection principleinformation for the terminal to select the N transmission mode sets fromthe M transmission mode sets.

Application Example 5

In the present application example, a terminal (i.e., the firstcommunication node) selects N sending beams from M sending beam sets(i.e., transmission mode sets) for sending an uplink control channel. Mis a natural number, and N is a natural number less than or equal to M.

As shown in FIG. 3 , the terminal receives a downlink data channelsignal and/or a downlink measurement reference signal on{slotn1,slotn2,slotn3} and the base station (i.e., the secondcommunication node) indicates ACK/NACK response control information fora downlink data channel and/or channel state information feedback needto be sent on slotn4. When a sending beam of the uplink control channelis acquired according to a sending beam of a downlink control channel(or when the sending beam of the uplink control channel is acquiredaccording to a receiving beam for receiving the downlink controlchannel), transmission modes on the {slotn1, slotn2, slotn3} aredifferent from a transmission mode of a downlink control channel relatedto the downlink data channel. For example, for sending beam 1 to sendingbeam 3 in FIG. 3 , a receiving beam set {receiving beam 1 to receivingbeam 3} for receiving {sending beam 1 to sending beam 3} iscorrespondingly obtained, the terminal obtains, according to uplink anddownlink reciprocity and according to {receiving beam 1 to receivingbeam 3} for receiving the downlink control channel, {sending beam 1′,sending beam 2′, sending beam 3′} (i.e. the M=3 transmission mode sets)for sending the uplink control channel, and the terminal needs to selecta sending beam from the three sending beams for sending the uplinkcontrol channel signal.

In the present application example, the N sending beams are selectedfrom the M transmission mode sets according to priorities of thetransmission mode sets, such as selecting sending beams having highpriorities from the M transmission mode sets, where the priorities ofthe sending beams may be indicated by the base station or according towhether the sending beams are primary serving beams, or the higher thetime domain density of a send beam is, the higher the priority is. Forexample, in FIG. 7 , the sending beam 1 related to the sending beam 1′occurs a higher number of times than the sending beam 2 related to thesending beam 2′, and the sending beam 1′ is selected to send the uplinkcontrol channel in slotn4.

The N transmission modes may also be selected in a manner of at leastone combination of the selection manners in application example 1 toapplication example 5 described above.

In FIG. 3 , slotn1 to slotn3 have a chronological order, and may becontinuous in the time domain or discrete in the time domain. Slotn4 maybe the same slot as slotn3 or may be a slot after slotn3, and of courseFIG. 3 is merely an example and another time unit like slot may be used,such as a mini-slot, a sub-frame, etc.

In FIG. 3 , the transmission mode of the uplink control channel isobtained according to the transmission mode of the downlink controlchannel, that is, the transmission mode pattern of the downlink controlchannel is notified by control signaling, and the terminal receives thedownlink control channel using a suitable receiving beam based on thenotified transmission mode and then obtains, according to the uplink anddownlink reciprocity, the transmission mode of the uplink controlchannel according to the receiving mode. In another implementation modeof the present embodiment, as shown in FIG. 4 , the base stationnotifies, through the control signaling, the terminal of the receivingmode pattern for receiving or detecting the downlink control channel,and the terminal obtains M transmission mode sets according to uplinkand downlink reciprocity based on the notified receiving beam pattern.

The M transmission mode sets are obtained through the transmission modeof the downlink control channel (or a receiving mode for receiving thedownlink control channel), and in another implementation mode, may alsobe obtained through M pieces of downlink control information. Forexample, in the DCI notifying a PDSCH or the DCI triggering CSIreporting in {slotn1-slotn3} in FIG. 3 , the base station notifies theterminal of the sending beams configured for sending the controlinformation, so that three transmit beams also exist, i.e., the Msending beams.

Application Example 6

In the present application example, a transmission mode of an uplinkcontrol channel is obtained according to a transmission mode of adownlink control channel.

In the present application example, no matter how to set a multi-beam(the beam is the transmission mode) pattern of the downlink controlchannel, a sending beam of the uplink control channel is determinedaccording to a detected sending beam of a PDCCH. As shown in FIG. 8 , abase station configures the sending beam pattern of the downlink controlchannel to be {sending beam 1, sending beam 1, sending beam 1 andsending beam 2} through control signaling, the terminal obtains that adownlink sending beam 1 corresponds to an uplink sending beam 1′ andthat a downlink sending beam 2 corresponds to an uplink sending beam 2′according to uplink and downlink reciprocity or another associationrelationship, and in FIG. 8 , the terminal obtains a transmission modeof an uplink control channel according to a detected receiving beamcorresponding to the downlink control channel. For example, in slotn3, abase station may be configured to use a sending beam 1 and a sendingbeam 2 to send the downlink control channel, a control channelcorresponding to the sending beam 1 and the sending beam 2 is sent in atime division manner or a frequency division manner, or the sending beam1 and the sending beam 2 correspond to different receiving beams, andthe terminal obtains the sending beam of the uplink control channelaccording to the actually detected sending beam of the downlink controlchannel. For example, the base station may be configured, throughhigher-layer control signaling (or preceding control signaling), to sendthe downlink control channels on {sending beam 1 and sending beam 2} on{slotn3,slotn6}, and the terminal sends the uplink control channelsaccording to the actually detected beams of the downlink controlchannels, for example, on slotn3, the downlink control channel isdetected on the sending beam 1 and is not detected on the sending beam2, and then the uplink control channel is sent by using an uplinksending beam 1′ corresponding to the sending beam 1. On slotn6, adownlink control channel is detected on the sending beam 2 and is notdetected on the sending beam 1, and then the uplink control channel issent by using an uplink sending beam 2′ corresponding to the sendingbeam 2. The detected downlink control channel must be a downlink controlchannel related to the uplink control channel, such as a downlinkcontrol channel for allocating downlink data, and the uplink controlchannel includes ACK/NACK feedback information of the downlink data. Thedownlink control channel may also not be limited, for example, thedownlink control channel may be any downlink control channel sent to theterminal and is not necessarily associated with the uplink controlchannel, for example, the uplink control channel is a periodic CSI (orsemi-periodic) uplink control channel, while the downlink controlchannel is a downlink control channel for allocating downlink dataresources and/or a downlink control channel for allocating uplink dataresources.

Alternatively, it is agreed that the base station certainly needs tosend the downlink control channel to the terminal by using the sendingbeam 1 and the sending beam 2 on {slotn3, slotn6}, and the terminalselects an optimal sending beam to send the uplink control channel tothe base station according to the receiving quality of the two sendingbeams. Of course, it is also possible that the sending beam 1′ and thesending beam 2′ of the terminal correspond to different uplink controlchannel resources, the terminal selects the sending beam having the bestreceiving quality and selects the uplink control channel resourcecorresponding to the sending beam to send the uplink control channel,and the base station knows the sending beam selected by the terminalaccording to the detected uplink control channel resource. The uplinkcontrol channel resource includes at least one of: a time domainresource, a code domain resource, a frequency domain resource, or ademodulation reference signal port resource.

Of course, different sending beams may correspond to different controlchannel search spaces, where the search space may also be named as acontrol channel resource set or others.

Application Example 7

In the present application example, a transmission mode of an uplinkcontrol channel is obtained according to a transmission mode of adownlink control channel.

In the present application example, the terminal obtains the sendingbeam of the uplink control channel merely according to the configuredmulti-beam pattern of the downlink control channel and not according tothe actually detected receiving beam of the PDCCH (i.e., DCI in thefigure), and the terminal obtains the sending beam of the uplink controlchannel merely according to configuration information about a sendingbeam (or configuration information about a receiving beam) of thedownlink control channel in a time unit associated with the uplinkcontrol channel. In an implementation mode about the time unitassociated with the uplink control channel, the time unit includes adownlink signal or downlink control signaling, and uplink feedbackinformation corresponding to the downlink signal or the downlink controlsignaling is included in the uplink control channel. The time unitassociated with the uplink control channel is the time unit where theuplink control channel is located.

Specifically, as shown in FIG. 9 , before slotn3, the base stationconfigures the sending beams of the downlink control channel to be{sending beam 1, sending beam 2} on slotn3 through signalinginformation, so that the terminal needs to detect the downlink controlchannel on the receiving beam 1 and the receiving beam 2 on slotn3, butin the implementation mode of acquiring the sending beam of the uplinkcontrol channel according to the configuration information about thedownlink control channel, regardless of the detection of the downlinkcontrol information (e.g., information about whether the downlinkcontrol channel is detected by the terminal on slotn3 or about whichreceiving beam on which the downlink control information is detected),the terminal obtains information about the sending beam of the uplinkcontrol channel merely according to the configuration information,previously configured on slotn3, about the beams {sending beam 1,sending beam 2} for the base station to send the downlink controlchannel. The downlink data channel or the downlink measurement referencesignal is included on slotn3, or triggering signaling for triggering theterminal to report the channel quality is included on slotn3, where theACK/NACK feedback information about the data channel and/or the channelquality feedback information of the measurement reference signal and/orthe channel quality feedback information of the measurement reportingtrigger signaling are on slotn3. Uplink feedback informationcorresponding to slotn3 is fed back on slotn4, and the terminal sendsthe uplink control channel by using {sending beam 1′, sending beam 2′},regardless of an actually detected transmission mode in which the basestation sends the downlink control channel. As shown in FIG. 9 , theterminal detects the downlink control channel sent by the base stationin the transmission mode 1 from the receiving mode 1′, and does notdetect the downlink control channel sent by the base station in thetransmission mode 2 from the receiving mode 2′.

When the time unit associated with the uplink control channel is thetime unit where the uplink control channel is located, as shown in FIG.9 , the time unit is slotn4, and the terminal obtains information aboutthe sending beam of the uplink control channel in slotn4 according toconfiguration information about the sending beam (or configurationinformation about the receiving beam) of the downlink control channel inslotn4.

When the time unit associated with the uplink control channel is thetime unit where a downlink signal associated with the uplink controlchannel is located, as shown in FIG. 9 , the time unit associated withthe uplink control channel sent on slotn4 is slotn3, and the terminalobtains information about the sending beam of the uplink control channelin slotn4 according to configuration information about the sending beam(or configuration information about the receiving beam) of the downlinkcontrol channel in slotn3.

When the time unit associated with the uplink control channel is anagreed time window, as shown in FIG. 9 , if the predetermined timewindow corresponding to slot k is {slotk−1,slot k,slotk+1}, and when{slotn1˜slotn4} in FIG. 9 is continuous, the time unit window associatedwith the uplink control channel sent on slotn3 is{slotn2,slotn3,slotn4}, and the terminal obtains information about thesending beam of the uplink control channel in slotn3 according toconfiguration information about the sending beam (or configurationinformation about the receiving beam) of the downlink control channel in{slotn2,slotn3,slotn4}. Of course, the time window corresponding to slotk in the present embodiment is {slotk−1,slot k,slotk+1} by way ofexample only, and the case of other time windows is not excluded. Forexample, the time window is a downlink control channel sending beampattern period, where the downlink channel pattern period is repeated.As shown in FIG. 8 or 9 , the downlink control channel is repeated in asending pattern of {sending beam 1, sending beam 1, sending beam 1 andsending beam 2}, that is, the sending beam pattern of the downlinkcontrol channel is repeated every three time units, and the figure showsthe sending beams (or a receiving beam pattern configured by the basestation and required by the terminal to receive the downlink controlchannel) configured by the base station and used by the base station tosend the downlink control channel, but the base station does notnecessarily send the downlink control channel to the terminal in onetime unit, that is, the downlink control channel is sent on demand.

Application Example 8

In the present application example, a transmission mode of an uplinkcontrol channel is obtained according to a transmission mode of adownlink control channel.

In the present application example, the uplink control channel isfirstly sent by using the sending beam of a terminal corresponding to amain beam of the downlink control channel, and whether the uplinkcontrol channel is sent on an auxiliary beam is further determinedaccording to indication information. For example, the configuration ofsending beam patterns of the downlink control channel is as shown inFIGS. 8 and 9 and a main beam is configured to be a sending beam 1, andthe terminal firstly sends the uplink control channel on a sending beam1′ of the terminal corresponding to the sending beam 1 of a basestation, and when indication information from the base station andindicating that the uplink control channel needs to be sent on theauxiliary beam (i.e., a sending beam 2′ corresponding to a sending beam2 of the base station), the uplink control channel is sent by using theauxiliary beam. Alternatively, when the base station indicates that theuplink control channel needs to be sent on the auxiliary beam, theuplink control channel is sent by using the main beam 1′ and theauxiliary beam 2′. For example, in FIGS. 8 and 9 , the terminal sends onslotn2 and slotn3 the uplink control channels by using the main beams1′, respectively, and the base station indicates on slotn3 or slotn4through indication information the receiving situation of the uplinkcontrol channel fed back on {slotn2˜slotn3} by the terminal to the basestation. If the indication information indicates that the base stationhas received the uplink control channel fed back by the terminal to thebase station, the terminal sends merely uplink control information forslotn3 on the sending beam 2′ of slotn4. If the indication informationindicates that one or all of the uplink control channels fed back by theterminal on {slotn2˜slotn3} are not received by the base station (e.g.,the base station indicates the receiving situation of the uplink controlchannels fed back on {slotn2˜slotn3} by the terminal to the base stationby means of the indication information of a bitmap), the terminal needsto send on the auxiliary beam 2′ of slotn4 not only feedback informationfor downlink slotn3, but also the part of the uplink control channelssent on the {slotn2˜slotn3} which are not received by the base station,and thus a case may exist where on slotn4, the content sent on the mainbeam 1′ is different from the content sent on the auxiliary beam 2′, forexample, merely feedback information for downlink slotn3 is sent on themain beam 1′, and not only the feedback information for slotn3 but alsothe feedback information for {slotn1˜slotn2} which was not successfullyreceived by the base station before needs to be sent on the auxiliarybeam 2′.

In the implementation mode described above, whether the uplink controlchannel is sent on the auxiliary beam (or whether multiple beams areused) is determined according to the indication information sent by thebase station. In the second implementation mode of determining whetherto send the uplink control channel on the auxiliary beam (or whether touse multiple beams), whether the uplink control channel is sent on theauxiliary beam (or whether the uplink control channel is sent by usingmultiple beams) is determined according to whether the sending beam ofthe base station is detected at the time of detecting the auxiliary beamby the terminal. For example, in FIG. 8 , the downlink control channelmay be configured to be sent by the base station using the sending beam1 and/or the sending beam 2 on slotn3, particularly, the search spacesof the sending beam 1 and the sending beam 2 are separated, and as shownin FIG. 10 , on slotn3, the search space 1 corresponds to the sendingbeam 1 of the base station and the search space 2 corresponds to thesending beam 2 of the base station. Meanwhile, the sending beam 1 of thebase station corresponds to the sending beam 1′ of the terminal and thesending beam 2 of the base station corresponds to the sending beam 2′ ofthe terminal. If the terminal detects the PDCCH in the search spacecorresponding to the sending beam 2 on slotn3 and the PDCCH indicatesthe PDSCH or triggers channel state information (CSI) reporting, theterminal needs to send on slotn4 the response ACK/NACK to the PDSCHand/or the CSI reporting by using the sending beam 2′. Of course, onslotn3, if the terminal detects a PDCCH in the search spacecorresponding to the sending beam 2 and detects a PDCCH in the searchspace corresponding to sending beam 1, and the two PDCCHs are repeatedtransmissions of the same DCI (or sending of different channel codingredundancy versions of the same DCI), the terminal sends the uplinkcontrol channel on slotn4 by using the sending beam 1′ and the sendingbeam 2′, where the uplink control channel includes response informationabout a PDSCH indicated by the downlink control channel and/or CSIreporting information triggered by the downlink control channel. In FIG.10 , the search space corresponding to the sending beam 1 and the searchspace corresponding to the sending beam 2 are time division, the presentexample does not exclude that the search spaces are frequency division,or the search space corresponding to the sending beam 1 is the same asthe search space corresponding to the sending beam 2, and the terminalobtains the sending beam configured for the base station to send thedownlink control channel according to the detection situation of thedetected control channel.

In the implementation mode described above, whether the uplink controlchannel is sent on the auxiliary beam (or whether multiple beams areused) is determined according to the indication information sent by thebase station. In the third implementation mode of determining whether tosend the uplink control channel on the auxiliary beam (or whether to usemultiple beams), the terminal uses the auxiliary beam to send the uplinkcontrol channel when the PDSCH is retransmitted.

Application Example 9

In the present application example, a transmission mode of an uplinkcontrol channel is obtained according to a transmission mode of adownlink control channel. Or among control information sent by a basestation, the transmission mode (or receiving mode) of the downlinkcontrol channel and the transmission mode of the uplink control channelshare configuration information.

In the present application example, the resource granularities of thetransmission modes of the uplink control channel and the downlinkcontrol channel are different but the proportions are the same, thesituations of beams used by the uplink control channels sent atdifferent time are the same, and each PUCCH is a downscaled version ofthe whole PDCCH mode. As shown in FIG. 11 , when the sending pattern ofthe sending beam (or the receiving beam) of the downlink control channelis configured to be in a manner, i.e., a pattern of repeating {sendingbeam 1, sending beam 1, sending beam 1 and/or sending beam 2}, shown inFIG. 12 , the sending beams used by each uplink control channel are{sending beam 1′, sending beam 1′, sending beam 1′ and/or sending beam2′}. That is, the time granularity of different transmission mode sets(or different receiving mode sets) in the downlink control channel inthe shared configuration information is a slot, while the timegranularity of different transmission modes in the uplink controlchannel in the shared configuration information is an OrthogonalFrequency Division Multiplexing (OFDM) symbol (of course multiple OFDMsymbols are also possible).

Of course, the pattern of the sending beams in the uplink controlchannel may also be based merely on the number of sending beams of thedownlink control channel, without strictly referring to the pattern ofthe sending beams in the downlink control channel, for example, in FIG.12 , the sending beam 1′ and the sending beam 2′ in an uplink controlchannel occupy the resources of the uplink control channel in equalproportion. That is, the different transmission mode sets of the uplinkcontrol channel and the different transmission modes of the downlinkcontrol channel occupy different time resource granularities andproportions.

When the terminal needs to use multiple beams to send the uplink controlchannel, for example, when the terminal needs to use the sending beam 1′and the sending beam 2′ to send the uplink control channel, the multiplebeams may be sent in a time division manner and/or in a frequencydivision manner, and of course the multiple beams may be sent in amanner of occupying the same time-frequency resource and occupyingdifferent sending antennas, or the multiple beams may be sent in amanner of occupying the same time-frequency resource and that in amanner that different sending beams occupy different demodulationreference signals. Alternatively, the uplink control channel is sent byusing two sending beams on one demodulation reference signal through thesame time-frequency resource.

Of course, multiplexing manners of different transmission modes of thedownlink control channel and multiplexing manners of differenttransmission modes of the uplink control channel may also be different.As shown in FIG. 13 , two sending beams in the downlink control channelare sent in the frequency division manner, and through mapping, needs tobe sent in the uplink control channel in the time division manner. Forexample, when the number of receiving radio frequency links of theterminal is greater than the number of sending radio frequency links ofthe terminal, two sending beams may be received simultaneously, whiletwo sending beams cannot be sent simultaneously and need to be sent inthe time division manner.

The above-mentioned sending beam 1 may be a sending beam set 1 and thesending beam 2 may be a sending beam set 2.

The above resources are time domain resources, and similarly theresources may also be frequency domain resources, and/or demodulationreference signal resources, and/or sending antenna port resources.

Application Example 10

In the present application example, a terminal performs selection from Msending beam sets (i.e., the M transmission mode sets), where the Mtransmission mode sets are formed by transmission mode sets of adownlink control channel configured by a base station. As shown in FIG.14 , a sending pattern of the downlink control channel configured by thebase station is a pattern of repeating {sending beam 1, sending beam 1,sending beam 1, sending beam 1, sending beam 2}, and then the M sendingbeam sets are formed by {sending beam 1, sending beam 2} and are notassociated with the downlink control channel associated with an uplinkcontrol channel. As shown in FIG. 14 , the terminal feeds back ACK/NACKfeedback information about {slotn1 to slotn3} on slotn4, but the sendingbeams of the uplink control channel on slotn4 is not obtained accordingto the sending beams (or configuration information about the receivingbeams) of the downlink control channels of {slotn1 to slotn3} butaccording to the configuration information about the sending beams ofthe whole downlink control channel, the sending beams of the uplinkcontrol channel is obtained to be {sending beam 1, sending beam 2}, andthe uplink sending beams are obtained to be {sending beam 1′, sendingbeam 2′} according to uplink and downlink reciprocity. Further, theterminal may select one in {sending beam 1′, sending beam 2′} to sendaccording to the indication of the base station based on the obtainedsending beams {sending beam 1′, sending beam 2′}.

The terminal may select N transmission mode sets from the M transmissionmode sets based on the indication of the base station or an agreed ruleor a decision of whether a certain preset condition is satisfied, andthe selected transmission mode sets are configured for sending theuplink control channel.

Application Example 11

In the present application example, information about a sending beam ofan uplink control channel is configured through multi-layer controlinformation.

For example, multiple uplink transmission mode sets are configuredthrough higher-layer control signaling (including Radio Resource Control(RRC) control signaling and/or Media Access Control Element (MAC CE)control signaling), and then DCI signaling triggers a transmission modeset that is specifically used. As shown in Table 1, set 0 and set 1 areconfigured through the higher layer, and DCI signaling triggers one thatis specifically used. The set 0 and the set 1 may also be configured inthe manner of Table 2. When the high layer notifies the transmissionmode set, not only information about the sending beam is notified, butalso the multiplexing manner of the sending beam is notified, such as atime division multiplexing manner of the sending beam. Alternatively, asshown in Table 3, when the higher layer notifies the transmission modeset, the higher layer needs to notify the time domain resource whereeach sending beam set is located when multi-beam time divisionmultiplexing is used. Of course, as shown in Table 4, when multi-beamtime division multiplexing is used, a main beam is sent on the defaulttime domain resource of the uplink control channel (the default timedomain resource is the same as the time domain resource when the singlebeam is sent), and the time domain resource where the auxiliary beam islocated is notified through higher-layer signaling.

TABLE 1 DCI signaling Transmission mode set 0 Set 0 {sending beam set1′} 1 Set 1 {sending beam set 1′ and sending beam set 2′}

TABLE 2 DCI signaling Transmission mode set 0 Set 0 {sending beam set1′} in a single time unit manner 1 Set 1 {sending beam set 1′ andsending beam set 2′} in a multi-time unit manner

TABLE 3 DCI signaling Transmission mode set 0 Set 0 {sending beam set1′} in a single time unit manner 1 Set 1 {(sending beam set 1′, timedomain resource 1), (sending beam set 2′, time domain resource 2)} in amulti-time unit manner

TABLE 4 DCI signaling Transmission mode set 0 Set 0 {sending beam set1′} in a single time unit manner 1 Set 1 {sending beam set 1′, (sendingbeam set 2′, time domain resource 2)} in a multi-time unit manner

The time unit of the multi-beam time division multiplexing may be a slotor a time domain OFDM symbol or a time domain single carrier symbol ormultiple time domain symbols in a slot. In the tables described above,multiple sending beams are sent through time division multiplexing, andthe present embodiment does not, of course, exclude that multiplesending beams are sent by means of frequency division, or multipledemodulation reference signals, or multiple sending antennas, andsimilar to the above-mentioned notification of time domain resources,when a transmission mode set is notified through higher-layer controlsignaling, a frequency domain resource and/or a demodulation referencesignal resource and/or a sending antenna port resource corresponding toeach sending beam set are needed at the same time.

Application Example 12

In the present application example, a base station configures differenttransmission mode set information for different types of uplink controlchannels.

The different types include two or more of the following types: anuplink control channel for feeding back ACK/NACK, an uplink controlchannel for feeding back channel state information (further, differentuplink control information may be divided into according to specificinformation about the fed back CSI, for example, different uplinkcontrol channels are divided into according to a feedback precodingmatrix indicator (PMI), a rank indication (RI) and a channel qualityindicator (CQI)), a periodically sent uplink control channel, anaperiodically sent uplink control channel, a uplink control channel ofLTE, an uplink control channel of NR, a long-format uplink controlchannel or a short-format uplink control channel.

Specifically, since the uplink control channel of ACK/NACK and theuplink control channel for feeding back channel state information havedifferent requirements on robustness and real-time performance,different transmission mode information may be configured for the twotypes of uplink control channels.

Alternatively, transmission mode information is configured for theuplink control channel of LTE and the uplink control channel of NRrespectively.

Alternatively, since the long-format uplink control channel and theshort-format uplink control channel have different requirements onreal-time performance, transmission mode information is configured forthe two types of uplink control channels respectively.

Alternatively, different transmission mode information is configured forthe periodically sent uplink control channel and the aperiodically sentuplink control channel respectively.

Application Example 13

In the present application example, an acquisition mode for atransmission mode of an uplink control channel is acquired according toindication information.

For example, first indication information indicates whether thetransmission mode of the uplink control channel can be acquiredaccording to a transmission mode (or a receiving transmission mode) ofthe downlink control channel, and when the first indication informationindicates the transmission mode of the uplink control channel can beacquired according to the transmission mode (or the receivingtransmission mode) of the downlink control channel, the terminalacquires the transmission mode of the uplink control channel accordingto the configured transmission mode of the downlink control channel.When the first indication information indicates the transmission mode ofthe uplink control channel cannot be acquired according to thetransmission mode (or the receiving transmission mode) of the downlinkcontrol channel, transmission mode related information of the uplinkcontrol channel further needs to be configured through second indicationinformation. Particularly, when the second indication informationperforms indication through physical layer dynamic control information,when the first indication information indicates the transmission mode ofthe uplink control channel can be acquired according to the transmissionmode (or the receiving transmission mode) of the downlink controlchannel, a domain indicating the transmission mode of the uplink controlchannel exists in the physical layer dynamic control information, andwhen the indication indicates the transmission mode of the uplinkcontrol channel cannot be acquired according to the transmission mode(or the receiving transmission mode) of the downlink control channel,the domain indicating the transmission mode of the uplink controlchannel does not exist in the physical layer dynamic controlinformation, so that the number of bits in the physical layer dynamiccontrol information is changed with the first indication information.

In the application example, when the first indication informationindicates the transmission mode of the uplink control channel can beacquired according to the transmission mode (or the receivingtransmission mode) of the downlink control channel, the terminalacquires the transmission mode of the uplink control channel accordingto the configured transmission mode of the downlink control channel, andthe transmission mode of the downlink control channel and thetransmission mode of the uplink control channel may also share theconfiguration information.

Application Example 14

In the present embodiment, a terminal determines an acquisition mode fora transmission mode, the terminal acquires the transmission modeaccording to the determined acquisition mode, and the terminal sends anuplink signal in the transmission mode.

The acquisition mode includes the following steps. The acquisition modeis determined according to a type of an uplink signal (i.e., a firstsignal), where the type of the uplink signal includes at least one ofthe following signals: a data channel signal, a control channel signal,a measurement reference signal, a demodulation reference signal, aresource request signal, a random access signal (such as a random accesssignal in a non-contention manner), or a beam recovery request signaland where types of the uplink signals are different and then theacquisition modes are different. And/or the terminal receives downlinkcontrol information, where the downlink control information indicatesthe acquisition mode. And/or the acquisition mode is determinedaccording to indication information of whether uplink and downlinkreciprocity is established. And when the uplink signal is an uplinkcontrol channel signal, the acquisition mode is determined according toa type of the first control channel signal.

The type of the uplink control channel includes at least one of thefollowing types: the uplink control channel is periodically sent; theuplink control channel is aperiodically sent; the uplink control channelis semi-periodically sent; a time domain of the uplink control channelis less than a predetermined threshold; the time domain of the uplinkcontrol channel is greater than the predetermined threshold; the uplinkcontrol channel includes data channel response information; the uplinkcontrol channel includes channel state feedback information; the uplinkcontrol channel is a control channel over a first network; the uplinkcontrol channel is a control channel over a second network; duration ofthe uplink control channel is less than a predetermined threshold; theduration of the uplink control channel is greater than the predeterminedthreshold; the uplink control channel is a long-format control channel;or the uplink control channel is a short-format control channel.

Specifically, different transmission modes may be configured fordifferent signals, or a transmission mode resource pool shared by eachuplink signal may be notified through first downlink control information(such as higher-layer control information), and then a transmission modeof each uplink signal is specifically notified in second downlinkcontrol information, where the transmission mode notified in the secondsignal belongs to the transmission mode resource pool. A similar methodmay also be configured for different types of uplink controlinformation. Alternatively, acquisition modes of different types ofsignals are different, and the specific acquisition mode may be at leastone of the following manners: obtaining the M transmission mode sets byacquiring transmission modes associated with multiple pieces of uplinkcontrol information included in the uplink signal; receiving downlinkcontrol information, and obtaining the M transmission mode setsaccording to the downlink control information; obtaining the Mtransmission mode sets according to configuration information about ato-be-detected search space of a control channel in a time unitassociated with the uplink signal; obtaining the M transmission modesets according to configuration information about a to-be-detectedtransmission mode of the control channel in the time unit associatedwith the uplink signal; obtaining the M transmission mode sets accordingto configuration information about a to-be-detected receiving mode ofthe control channel in the time unit associated with the uplink signal;obtaining the M transmission mode sets according to configurationinformation about a detected search space where the control channel islocated in the time unit associated with the uplink signal; obtainingthe M transmission mode sets according to configuration informationabout a detected transmission mode of the control channel in the timeunit associated with the uplink signal; obtaining the M transmissionmode sets according to configuration information about a detectedreceiving mode of the control channel in the time unit associated withthe uplink signal; obtaining the M transmission mode sets by acquiring atransmission mode of a downlink signal associated with the uplinksignal; obtaining the M transmission mode sets by acquiring a receivingmode of the downlink signal associated with the uplink signal; oracquiring information about the M transmission mode sets in an implicitmanner. Of course, other acquisition modes are not excluded. Of course,in the present application example, different acquisition modes may benotified at different time for the same signal type or the same controlchannel type.

Application Example 15

In the present application example, a base station notifies a terminalof a Sounding Reference Signal (SRS) port group when the base stationconfigures an uplink signal, the receiving modes of sending beamscorresponding to different ports in the SRS port group and arriving atcorresponding base stations are the same, or the base station maysimultaneously receive ports in use in the SRS port group when theterminal simultaneously sends the ports in use in the SRS port group.

Each SRS port corresponds to one CSI-RS resource, so that the terminalselects one (or more) SRS ports from the SRS port group according to thereceiving situation of the corresponding CSI-RS resource, and sends theuplink signal by using a sending beam of the SRS port.

In the above implementation mode, an SRS port from an SRS port group isnotified to the terminal when an uplink signal is configured, and atleast one piece of the following information may also be configured tothe terminal when the uplink signal is configured: an SRS resourcegroup, a group of the SRS resource and PMI, or a sending beam group.Then, the terminal is enabled to select a sending beam (i.e., thetransmission mode) corresponding to at least one piece of information inthe group to send the uplink signal.

One SRS port corresponds to one CSI-RS resource, and at least one pieceof the following information may also be provided: one SRS portcorresponds to one CSI-RS port, or one SRS port corresponds to oneCSI-RS resource and PMI.

In the above implementation mode, one SRS port group is configured forone uplink signal, and the terminal selects N SRS ports from M SRS portsin the SRS port group according to the receiving situation of CSI-RSresources corresponding to the SRS port group and sends the uplinksignal by using sending beams for sending the N SRS ports. For example,the uplink signal is an uplink control channel. The present embodimentalso does not exclude that the uplink signal is an uplink data channel.

As shown in FIGS. 15 and 16 , CSI-RS port 1 corresponds to SRS port 1,CSI-RS port 2 corresponds to SRS port 2, a base station configures anuplink control channel (SRS port 1 and SRS port 2), and merely onesending beam corresponding to radio frequency link SRS port 1 and SRSport 2 of the terminal can be generated in a time division manner. Theterminal selects one of the SRS port 1 and the SRS port 2 to send theuplink control channel based on the receiving quality of the CSI-RS port1 and the CSI-RS port 2.

Application Example 16

In the present application example, a base station notifies a downlinkreference signal port group to a terminal when the base stationconfigures an uplink signal, so that the terminal selects one or moredownlink reference signals in the downlink reference signal port groupaccording to the receiving quality, and obtains a sending beam of anuplink reference signal according to a receiving mode of the selecteddownlink reference signal.

Application Example 17

In the present application example, a transmission mode of an uplinkdata channel is determined according to a transmission mode of adownlink data channel or a receiving mode of the downlink data channel.The uplink data channel is sent according to the determined transmissionmode. Specifically, for example, a sending beam (i.e., the transmissionmode) configured for the uplink data channel is notified in higher-layercontrol information, and when the transmission mode of the downlink datachannel (or the receiving mode of the downlink data channel) is notifiedin DCI, a terminal may obtain an uplink sending beam according to theuplink and downlink reciprocity. Alternatively, the terminal may obtainthe uplink sending beam according to the transmission mode of thedownlink data channel (or the receiving mode of the downlink datachannel) and the uplink and downlink reciprocity only when the distancebetween the time unit where the DCI of the downlink data channel islocated and the time unit of the uplink data channel is within apredetermined threshold. When the distance between the time unit wherethe DCI of the downlink data channel is located and the time unit of theuplink data channel is beyond the predetermined threshold, the sendingbeam of the uplink data channel is still notified through a higherlayer.

Application Example 18

In the present embodiment, a transmission mode of an uplink data channelis determined according to a transmission mode of a downlink controlchannel or a receiving mode of the downlink control channel. The uplinkdata channel is sent according to the determined transmission mode.

Specifically, for example, a sending beam (i.e., the transmission mode)configured for the uplink data channel is notified in higher-layercontrol information, and the terminal is in accordance with the detectedDCI, where the DCI includes resource allocation information about theuplink data channel. The terminal obtains an uplink sending beamaccording to the uplink and downlink reciprocity and the transmissionmode of the DCI or the receiving mode for receiving the DCI.Alternatively, the terminal obtains the uplink sending beam according tothe transmission mode of the DCI (or the receiving mode of the DCI) onlywhen the distance between the time unit where the DCI is located and thetime unit of the uplink data channel is within a predeterminedthreshold. When the distance between the time unit where the DCI islocated and the time unit of the uplink data channel is beyond thepredetermined threshold, the sending beam of the uplink data channel isstill notified through a higher layer.

Application Example 19

In the present embodiment, two transmission mode modes exist in whichthe terminal sends an uplink signal, and which mode to use is determinedaccording to an explicit indication of a base station or according towhether a predetermined condition is satisfied.

In the first transmission mode mode, the terminal sends the uplinksignal in a combination of a first transmission mode set and a secondtransmission mode, which may also be referred to as a multi-beam mode.For example, the first transmission mode set includes an auxiliarysending beam and the second transmission mode set includes a mainsending beam.

In the second transmission mode mode, the terminal uses the secondtransmission mode set, where the second transmission mode set includesthe main sending beam.

When the uplink signal is an uplink control channel, a firsttransmission mode mode in use is determined according to a type of theuplink control channel, for example, the first transmission mode mode isconfigured for an uplink control channel for feeding back periodic CSI,and the second transmission mode mode is configured for ACK/NACK. Thesecond transmission mode mode is used when the LTE network is provided,and the first transmission mode mode is used when the NR network isprovided.

When the uplink signal is a data channel for feeding back ACK/NACK,where the ACK/NACK is response information to downlink data, when thedownlink data is retransmission data, the first transmission mode modeis configured for the uplink signal, and when the downlink data istransmitted for the first time, the second transmission mode mode isconfigured for the uplink signal.

When the uplink signal is an uplink data channel,

Application Example 20

In the present application example, when a terminal uses N transmissionmode sets to send an uplink signal, the terminal determines switchedtime domain resource granularities of transmission modes of the uplinksignal or determines the number of time domain resource granularities ofthe transmission modes of the uplink signal according to a value of Nand the number of demodulation reference signal ports allocated to theuplink signal.

When a sending beam (i.e., the transmission mode) is a radio frequencybeam and the radio frequency beam of the terminal is limited, forexample, merely Q transmission mode sets can be generated by theterminal at a time, when N transmission mode sets are configured forsending the uplink signal, the time domain resources occupied by theuplink signal need to be divided into ┌N/Q┐ time granularity units, andthe transmission mode sets in different time granularity units may bedifferent. And/or a same demodulation reference signal port needs tooccupy REs on different time domain granularity units, and/or the samedemodulation reference signal port cannot perform joint channelestimation on different time domain granularity units.

In the above description, the time domain resources occupied by theuplink signal is divided into ┌N/Q┐ time granularity units, or the timedomain granularity units are agreed, and the terminal determines thenumber of switched time domain resource granularities of thetransmission mode sets of the uplink signal according to the value of Nand the number of demodulation reference signal ports allocated to theuplink signal.

Application Example 21

In the present application example, when an uplink signal is sent byusing multiple beams which are time-division, the uplink signal may besent on different time domain symbols in a slot (or the time domainsymbols in a slot are divided into multiple time granularity units anddifferent sending beam sets occupy different time granularity units) ordifferent sending beam sets are sent in different slots.

Application Example 22

In the present application example, a terminal determines a value of Nof transmission mode sets configured for sending an uplink signalaccording to a size of resources occupied by the uplink signal.

For example, a larger value of N is configured for a relatively largenumber of resources, and a smaller value of N is configured for arelatively small number of resources.

The resources include at least one of: a time domain resource, afrequency domain or a reference signal resource.

In the present application, the uplink control channel may also be sentin an uplink data channel. For example and similarly, UCI is sent in aPUSCH in LTE. The above method for determining the transmission mode ofthe uplink data channel or the uplink control channel may also besimilarly configured for the method for determining the transmissionmode (or receiving mode) of the downlink control channel or the downlinkdata channel.

The embodiments of the present disclosure further provide a computerstorage medium configured to store computer programs for executing thesteps in the signal transmission method in the embodiments describedabove when the computer programs are executed by a processor. Theembodiments of the present disclosure further provide a computer storagemedium configured to store computer programs for executing the steps inthe control information sending method in the embodiments describedabove when the computer programs are executed by a processor.

The embodiments of the present disclosure further provide a signaltransmission apparatus. The apparatus includes: a processor and a memoryconfigured to store computer programs capable of being run on theprocessor.

The processor is configured to execute the steps in the signaltransmission method described in the embodiments of the presentdisclosure when the computer programs are run.

The embodiments of the present disclosure further provide a controlinformation sending apparatus. The apparatus includes: a processor and amemory configured to store computer programs capable of being run on theprocessor.

The processor is configured to execute the steps in the controlinformation sending method described in the embodiments of the presentdisclosure when the computer programs are run.

It is understandable that the memory may be a volatile memory or anon-volatile memory, or may include both the volatile memory and thenon-volatile memory. The non-volatile memory may be a read only memory(ROM), a programmable read-only memory (PROM), an erasable programmableread-only memory (EPROM), an electrically erasable programmableread-only memory (EEPROM), a ferromagnetic random access memory (FRAM),a flash memory, a magnetic surface memory, an optical disk or a compactdisc read-only memory (CD-ROM). The magnetic surface memory may be amagnetic disk memory or a magnetic tape memory. The volatile memory maybe a random access memory (RAM), which serves as an external cache. Byway of illustration but not limitation, many forms of RAMs may be used,such as a static random access memory (SRAM), a synchronous staticrandom access memory (SSRAM), a dynamic random access memory (DRAM), asynchronous dynamical random access memory (SDRAM), a double data ratesynchronous dynamic random access memory (DDRSDRAM), an enhancedsynchronous dynamic random access memory (ESDRAM), a syncLink dynamicrandom access memory (SLDRAM), and a direct rambus random access memory(DRRAM). The memory described in the embodiments of the presentdisclosure is intended to include, but is not limited to, these and anyother suitable type of memory.

The methods disclosed by the embodiments of the present disclosure maybe applied to a processor or may be implemented by the processor. Theprocessor may be an integrated circuit chip with signal processingcapabilities. In the implementation process, various steps of themethods described above may be performed by an integrated logic circuitof hardware or a software instruction in the processor. The processordescribed above may be a general-purpose processor, a digital signalprocessor (DSP), or another programmable logic device, another discretegate or transistor logic device, another discrete hardware component, orthe like. The processor may implement or execute various methods, stepsand logic block diagrams disclosed in the embodiments of the presentdisclosure. The general-purpose processor may be a microprocessor or anyconventional processor. The steps of the methods disclosed by theembodiments of the present disclosure may be directly implemented by ahardware decoding processor, or may be implemented by a combination ofhardware and software modules in the decoding processor. The softwaremodule may be located in a storage medium located in the memory. Theprocessor reads information in the memory and implements the steps ofthe methods described above in combination with hardware of theprocessor.

It should be understood by those skilled in the art that all or somesteps in the methods described above may be implemented by relevanthardware (such as a processor) as instructed by programs, and theprograms may be stored in a computer-readable storage medium, such as aROM, a magnetic disk, or an optical disk. All or part of the steps inthe embodiments described above may also be implemented by using atleast one integrated circuit. Accordingly, the modules/units in theembodiments described above may be implemented by hardware. For example,the functions of these modules/units may be implemented by at least oneintegrated circuit. Alternatively, these modules/units may beimplemented by software function modules. For example, the functions ofthese modules/units may be implemented by using a processor to executeprograms/instructions stored in a memory. The embodiments of the presentdisclosure are not limited to any specific combination of hardware andsoftware.

Although the embodiments disclosed by the present disclosure are asdescribed above, the content thereof is merely embodiments forfacilitating the understanding of the present disclosure and is notintended to limit the present disclosure. Any person skilled in the artto which the present disclosure pertains may make any modifications andchanges in the form of implementation and details without departing fromthe spirit and scope disclosed by the present disclosure, but theprotection scope of the present patent is still subject to the scopedefined by the appended claims.

What is claimed is:
 1. A signal transmission method, comprising:receiving, by a first communication node, first indication information,and determining an acquisition mode for a sending beam of an uplinksignal according to the first indication information, wherein the firstindication information indicates whether the sending beam of the uplinksignal is acquired according to a receiving beam of a downlink controlchannel; acquiring, by the first communication node in a case that thefirst indication information indicates that the sending beam of theuplink signal is acquired according to the receiving beam of thedownlink control channel, M sending beams, each of the M sending beamscorresponds to one of M receiving beams of the downlink control channel;determining, by the first communication node, N sending beams forsending the uplink signal from the M sending beams; and sending, by thefirst communication node, the uplink signal to a second communicationnode by using the N sending beams; wherein M is a natural number, and Nis a natural number less than or equal to M; wherein the uplink signalcomprises one of: a signal over an uplink control channel, a signal overan uplink data channel, or an uplink measurement reference signal;wherein the N sending beams from the M sending beams are determinedaccording to a priority order corresponding to the M sending beams in acase where N is less than M, wherein the priority order of the M sendingbeams is agreed with the second communication node, and the priorityorder of the M sending beams is determined based on an indication fromthe second communication node.
 2. The method of claim 1, wherein in acase where N is less than M, the N sending beams from the M sendingbeams are determined according to at least one of: an indicationreceived from the second communication node, an agreed rule, or ajudgement of whether a predetermined condition is satisfied.
 3. Themethod of claim 1, further comprising: the first communication nodeacquiring the M sending beams through the following manner: receiving,by the first communication node, second-type control information, andobtaining the M sending beams according to the second-type controlinformation; wherein receiving, by the first communication node, thesecond-type control information and obtaining the M sending beamsaccording to the second-type control information comprises at least oneof following manners: the second-type control information comprisesinformation about a first reference signal, and the first communicationnode acquires the information about the M sending beam sets according tothe first reference signal, wherein a transmission direction of thefirst reference signal is the same as a transmission direction of theuplink signal; the second-type control information comprises informationabout a second reference signal, and the first communication nodeacquires the information about the M sending beam sets according to thesecond reference signal, wherein a transmission direction of the secondreference signal is different from the transmission direction of theuplink signal; or the second-type control information comprisesinformation about a synchronization signal, and the first communicationnode acquires the information about the M sending beams according to theinformation about the synchronization signal.
 4. The method of claim 1,wherein a receiving beam of the downlink control channel is gotaccording to a Quasi-Co-Location reference signal of the downlinkcontrol channel.
 5. The method of claim 1, wherein the sending, by thefirst communication node, the uplink signal to the second communicationnode by using the N sending beams comprises at least one of followingmanners: determining, by the first communication node, a time domainresource corresponding to each of the N sending beams according to areceived signaling, wherein the time resource comprises one of: a slot,multiple time domain symbols in a slot; or sending, by the firstcommunication node, the uplink signal in a time division multiplexingmanner by using the N sending beams.
 6. The method of claim 1, whereinthe sending, by the first communication node, the uplink signal to thesecond communication node by using the N sending beams comprises atleast one of following manners: sending the uplink signal in a frequencydivision multiplexing manner by using the N sending beams; one sendingbeam corresponding to one demodulation reference signal port group, andsending the uplink signal on each port of the one demodulation referencesignal port group by using the one sending beam; a plurality of sendingbeams corresponding to one demodulation reference signal port, andsending the uplink signal on the one demodulation reference signal portby using the plurality of sending beams; one sending beam correspondingto one antenna port group, and sending the uplink signal on each port ofthe one antenna port group by using the one sending beam; determining anumber of time granularities occupied by the N sending beams accordingto a value of N and a number of demodulation reference signal ports orsending antenna ports allocated to the uplink signal; determining, bythe first communication node according to a received Radio ResourceControl (RRC) signaling, a frequency resource corresponding to each ofthe N sending beams; determining, by the first communication nodeaccording to a received RRC signaling, the one demodulation referencesignal port group corresponding to each of the N sending beams; ordetermining, by the first communication node according to a received RRCsignaling, the one antenna port group corresponding to each of the Nsending beams.
 7. The method of claim 1, wherein information included inthe uplink signal sent using different sending beams among the N sendingbeams is the same.
 8. The method of claim 1, wherein the sending beam ofthe uplink signal and the receiving beam of the downlink control channelshare configuration information.
 9. The method of claim 1, wherein the Mreceiving beams satisfy at least one of the following: different sendingbeams of the M receiving beams correspond to different downlink controlchannel resource sets; or the M receiving beams comprise receiving beamsof the downlink control channel configured by the second communicationnode.
 10. A signal reception method, comprising: transmitting, by asecond communication node, first indication information, and determiningan acquisition mode for a receiving beam of an uplink signal accordingto the first indication information, wherein the first indicationinformation indicates whether the sending beam of the uplink signal isacquired according to a receiving beam of a downlink control channel fora first communication node; receiving, by the second communication nodeusing N receiving beams in the case that the first indicationinformation indicates that the sending beam of the uplink signal isacquired according to the receiving beam of the downlink control channelfor the first communication node, the uplink signal which is sent fromthe first communication node using N sending beams, wherein the Nsending beams belong to M sending beams, each of the M sending beamscorresponds to one receiving beam of a downlink control channel at thefirst communication node, wherein M is a natural number, and N is anatural number less than or equal to M; wherein the uplink signalcomprises one of: a signal over an uplink control channel, a signal overan uplink data channel, or an uplink measurement reference signal;wherein the N sending beams from the M sending beams are determinedaccording to a priority order corresponding to the M sending beams in acase where N is less than M, wherein the priority order of the M sendingbeams is agreed with the first communication node, and the priorityorder of the M sending beams is determined based on an indicationtransmitted by the second communication node.
 11. The method of claim10, further comprising: sending, by the second communication node,second-type control information to indicate the first communication nodeto obtain the M sending beams according to the second-type controlinformation; wherein the sending second-type control informationcomprises at least one of following information: information about asending beam of the control channel signal sent by a third communicationnode; a plurality of pieces of control information; information about afirst reference signal wherein a transmission direction of the firstreference signal is the same as a transmission direction of the uplinksignal; information about a second reference signal, wherein atransmission direction of the second reference signal is different fromthe transmission direction of the uplink signal; or information about asynchronization signal.
 12. The method of claim 10, wherein thereceiving, by the second communication node according to the N receivingbeams, the uplink signal which is sent from the first communication nodeby using the N sending beams comprises at least one of: sending, by thesecond communication node, a signaling which includes a time domainresource corresponding to each of the N sending beams, wherein the timedomain resource comprises one of: a slot, multiple time domain symbolsin a slot; receiving the uplink signal in a time division multiplexingmanner by using the N receiving beams; receiving the uplink signal in afrequency division multiplexing manner by using the N receiving beams;receiving the uplink signal on each port of one demodulation referencesignal port group by using one receiving beam, wherein the one receivingbeam corresponding to the one demodulation reference signal port group;receiving the uplink signal on one demodulation reference signal port byusing plurality of receiving beams, wherein the plurality of receivingbeams corresponding to the one demodulation reference signal port;receiving the uplink signal on each port of one antenna port group byusing one receiving beam, wherein the one receiving beam correspondingto the one antenna port group; determining a number of timegranularities occupied by the N receiving beams according to a value ofN and a number of demodulation reference signal ports or sending antennaports allocated to the uplink signal; sending, a Radio Resource Control(RRC) signaling which includes a frequency resource corresponding toeach of the N sending beams; sending a RRC signaling which includes theone demodulation reference signal port group corresponding to each ofthe N sending beams; or sending a RRC signaling which includes the oneantenna port group corresponding to each of the N sending beams.
 13. Themethod of claim 10, further comprising at least one of: informationincluded in the uplink signal sent using different sending beams amongthe N sending beams is the same; different sending beams of the Mreceiving beams correspond to different downlink control channelresource sets; the M receiving beams comprise receiving beams of thedownlink control channel configured by the second communication node; areceiving beam of the N receiving beam is got according to aQuasi-Co-Location reference signal of the downlink control channel; orthe sending beam of the uplink signal and the receiving beam of thedownlink control channel share configuration information.
 14. A signaltransmission apparatus, comprising: at least one processor; and a memorycommunicably connected with the at least one processor and configuredfor storing computer-executable instructions executable by the at leastone processor, wherein the computer-executable instructions whenexecuted by the at least one processor cause the at least one processorto perform a method signal transmission method, wherein the methodcomprises: receiving, by a first communication node, first indicationinformation, and determining an acquisition mode for a sending beam ofan uplink signal according to the first indication information, whereinthe first indication information indicates whether the sending beam ofthe uplink signal is acquired according to a receiving beam of adownlink control channel; acquiring, by the first communication node, inthe case that the first indication information indicates that thesending beam of the uplink signal is acquired according to the receivingbeam of the downlink control channel, M sending beams, each of the Msending beams corresponds to one of M receiving beams of the downlinkcontrol channel; determining, by the first communication node, N sendingbeams for sending the uplink signal from the M sending beams; andsending, by the first communication node, the uplink signal to a secondcommunication node by using the N sending beams; wherein one sendingbeam of the M sending beams comprises at least one sending beam, whereinM is a natural number, and N is a natural number less than or equal toM; wherein the uplink signal comprises one of: a signal over an uplinkcontrol channel, a signal over an uplink data channel, or an uplinkmeasurement reference signal; wherein the N sending beams from the Msending beams are determined according to a priority order correspondingto the M sending beams in a case where N is less than M, wherein thepriority order of the M sending beams is agreed with the secondcommunication node, and the priority order of the M sending beams isdetermined based on an indication from the second communication node.15. The apparatus of claim 14, wherein the first communication nodeacquires the M sending beams through the following manner: receivingsecond-type control information, and obtaining the M sending beamsaccording to the second-type control information; wherein receiving, bythe first communication node, the second-type control information andobtaining the M sending beams according to the second-type controlinformation comprises at least one of following manners: the second-typecontrol information comprises information about a sending beam of thecontrol channel signal sent by a third communication node, and the firstcommunication node obtains the M sending beams according to the sendingbeam of the control channel signal sent by the third communication node,wherein the third communication node and the second communication nodeare a same communication node or different communication nodes; thesecond-type control information comprises a plurality of pieces ofcontrol information, and the M sending beams are obtained according tothe plurality of pieces of control information; the second-type controlinformation comprises information about a first reference signal, andthe first communication node acquires the information about the Msending beams according to the first reference signal, wherein atransmission direction of the first reference signal is the same as atransmission direction of the uplink signal; the second-type controlinformation comprises information about a second reference signal, andthe first communication node acquires the information about the Msending beams according to the second reference signal, wherein atransmission direction of the second reference signal is different fromthe transmission direction of the uplink signal; or the second-typecontrol information comprises information about a synchronizationsignal, and the first communication node acquires the information aboutthe M sending beams according to the information about thesynchronization signal.
 16. The apparatus of claim 14, wherein thesending, by the first communication node, the uplink signal to thesecond communication node by using the N sending beams comprises atleast one of following manners: determining, by the first communicationnode, a time domain resource corresponding to each of the N sendingbeams according to a received signaling, wherein the time domainresource comprises one of: a slot, multiple time domain symbols in aslot; or sending, by the first communication node, the uplink signal ina time division multiplexing manner by using the N sending beams. 17.The apparatus of claim 14, further comprising at least one of:information included in the uplink signal sent using different sendingbeams among the N sending beams is the same; different sending beams ofthe M receiving beams correspond to different downlink control channelresource sets; the M receiving beams comprise receiving beams of thedownlink control channel configured by the second communication node;the sending beam of the uplink signal and the receiving beam of thedownlink control channel share configuration information; or thereceiving beam of the downlink control channel is got according to aQuasi-Co-Location reference signal of the downlink control channel.